12 foods that naturally whiten your teeth

We’ve all been told to avoid red wine, dark berries, and black coffee in our quests for pearly whites, but what about foods that actually brighten your smile? Try these natural solutions for a brilliant beam

Strawberries

They may be bright red, but malic acid, a chief component of this summery fruit, acts as a natural astringent to remove surface tooth discoloration, says Dr. Irwin Smigel, president of the American Society for Dental Aesthetics. Fresh, juicy strawberries taste great in any meal—salads, desserts, cereal—and are widely available at farmers markets this time of year, so getting your daily dose is both simple and delicious

 

Seeds and nuts

Chewing these lightly abrasive, hard foods rubs plaque and stains off the surface of teeth, says Dr. Matthew Messina, a spokesperson for the American Dental Association. Pop a few almonds for a mid-afternoon snack—they’re full of protein, healthy fats, and the crunch you need to get pearly whites.

Onions

Although they may not be the ideal pre-date snack, the notoriously bad-for-breath alliums could be beneficial to teeth. Because they’re colorless, they won’t cause surface stains, says Messina, adding that after eating them you’re more likely to brush—which is a surefire way to get whiter teeth.

Apples

The loud crunch you hear when you bite into this hard fruit may be annoying, but it’s also good for your choppers. Apples’ crispiness strengthens gums, and their high water content increases saliva production, dispersing and neutralizing colonies of bacteria that lead to bad breath and plaque, says Smigel.

 

Baking soda

Take a toothpaste break and try brushing with this common ingredient. Baking soda is a base, like bleach, notes Messina, and the “soda”—which is actually a form of salt—in this pantry staple is a mild abrasive that works to scrub off plaque and surface stains.

Celery and carrots

The same high water content that makes these veggies great for your waistline and your health also helps them whiten your teeth by stimulating saliva production, which aids in washing away food debris and strengthening gums, according to Smigel.

Broccoli

Unlike beets and cranberries, this crunchy vegetable doesn’t stay stuck to teeth, so it won’t cause unsightly surface stains, says Messina. Throw some raw broccoli into your lunch—the florets will scrub the surface of teeth, giving them a brief and natural midday

Cheese

Hard cheese, like the little blocks you get on those delicious appetizer trays, is full of calcium, which strengthens teeth and gums, explains Smigel. Plus, most cheeses are near colorless, meaning they won’t stain your teeth. So go ahead, order that cheese plate.

Oranges

This bright fruit contains citrus, an acid that can wear away tooth enamel if ingested in large doses, making teeth whiter—but at a cost, says Messina. So while we don’t recommend gulping down bags of oranges in the spirit of a bright smile, a juicy helping once in a while is good for your pearly whites, and thanks to loads of vitamin C, your overall health too.

Water

Drink lots of water to keep your mouth hydrated and your smile bright, advises Smigel, who recommends sipping and swishing between glasses of wine and when eating dark, pigmented foods to prevent staining. However, while water reduces the acidity in your mouth and the resulting damage to your enamel, Dr. Smigel warns against imbibing too much

Pears

Smigel recommends munching on a pear to neutralize pesky odor-causing and staining bacteria colonies on teeth. Increased saliva production brought on by this sweet, delicious fruit also washes away food debris, leaving teeth clean and sparkling.

Source: yahoo shopping


Women should drink plenty of water in winter to keep cystitis at bay

Experts have warned that taking lesser amount of water during winters can give rise to major health problems such as cystitis or urinary tract infection, especially in women.

“Women are prone to cystitis because of their shorter urinary tract as compared to men. Women of all ages can acquire such infections but it is more with women who have just been married and women approaching menopause,” Malvika Sabharwal, head of department of gynaecologist and obstetrician, Nova Speciality Hospitals, was quoted as saying to IANS.

With women having higher risk of cystitis (eight times) than men, doctors recommend drinking at least 12 glasses of water a day to help flush out the infection and dilute the urine.

Up to 15 percent of women have cystitis each year and half of them have had cystitis at least once in their life.

“Women suffering from tuberculosis, diabetes mellitus, those who are pregnant and those who are sexually active are more vulnerable to cystitis,” added Sabharwal.

Doctors also stress that pregnant women should take special care not to keep their bladder empty.

“Pregnant women should try not to drink too much caffeine or acidic drinks such as orange juice as these can irritate the bladder. They should never keep their bladder empty as it can create an environment for bacteria to multiply,” Archana Dhawan Bajaj, gynaecologist and obstetrician at Nurture Clinic, told IANS.

“Burning sensation while urinating, frequent need to urinate but passing only small amounts or no urine, having pain in the lower back, dark smelly urine and even fever are the symptoms of cystitis,” adds Dhawan.

Blood can also pass along with urine but that can be detected only when the urine is tested.

“So to detect the severity of the infection, a simple microscopic culture of the urine has to be done,” Amita Shah, consultant gyanecologist, Columbia Asia Hospital, Gurgaon, told IANS.

However, doctors also advice microscopic urine examination once every three to six months.

“The treatment for cystitis includes addressing each episode promptly with a short course of antibiotics and sometimes, a regular dose of antibiotics for the long-term. However, if untreated, the infection can go from the bladder to the kidney,” added Shah.

To treat cystitis, doctors also advise daily doses of cranberry juices.

As preventive measures, doctors stress on maintaining hygiene.

“Self-hygiene is important and more important is that the washroom should also be cleaned and sanitised,” added Shah.

Source: News track India


Drug-resistant TB spreading fast in Russia

scientists have found that tuberculosis strains in Russia carry mutations that not only make them resistant to antibiotics but also help them spread more effectively.

The latest study of TB cases in Russia indicates that rampant drug resistance may not be the only explanation for the TB rise in the region – biological factors also play a major role in it.

Researchers at Queen Mary University of London analysed 1,000 genomes from different TB isolates – the largest whole-genome study of a single bacterial species so far.

This enabled the team to identify previously unknown mutations linked to antibiotic resistance, as well as “compensatory mutations” that improve the ability of drug-resistant TB to spread.

Nearly half of the TB isolates were multi-drug resistant, which means that they were impervious to the two common first-line antibiotics that cure most TB infections.

Sixteen percent of these isolates also harboured mutations that made them impervious to “second-line” drugs.

These infections are more expensive to treat and patients who receive ineffective drugs are more likely to spread TB, said the research published in the journal Nature Genetics.

TB, which is caused by the bacterium Mycobacterium tuberculosis, exploded in Russia and other former Soviet nations in the early 1990s, after the collapse of the Soviet Union and its health system.

“It certainly adds an extra layer of worry, because one had assumed if you could solve ‘programmatic’ weaknesses, you would solve the problem of the drug-resistant TB,” stressed Francis Drobniewski, a microbiologist at Queen Mary University.

“Although we know the general story of TB drug resistance in Russia, these new findings are still shocking,” added Christopher Dye, an epidemiologist at the World Health Organisation (WHO) in Geneva.

According to Megan Murray, an epidemiologist at the Harvard School of Public Health in Boston, Massachusetts, the worst scenario is that the organisms are developing resistance, compensating for it, and evolving into something that’s new and different, that’s much less treatable.

Source: Sify

 


Healthy lifestyle to improve oral health in diabetics

Diabetics, who are at a higher risk of suffering from oral health problems, can avoid these by adopting a healthy lifestyle.

Researchers at the University of Copenhagen have helped a large group of diabetics to markedly improve their oral health through health coaching.

“Diabetics are at a higher risk of suffering oral health issues like periodontitis and caries and other problems like dry mouth, fungal infections and poor wound healing,” said Ayse Basak Cinar, assistant professor at department of odontology at the university.

In all, 186 patients with type 2 diabetes participated in the study done in Turkey – the first in the world – to demonstrate the role of health coaching in improving dental health.

The patients with diabetes were divided into two groups.

One group was given traditional health information, for example a brochure on good dental hygiene.

The other group was offered motivational health coaching in the form of 3-6 sessions over a six-month period, focusing on diet, stress management and dental care, said the research published in the journal Clinical Oral Investigations.

“In patients who were given personal health coaching, biological markers for periodontitis – also known as loose teeth disease – were reduced by as much as 50 percent over a six-month period,” the research noted.

“The patients in the trial group saw a significant decline in long-range blood sugar levels, whereas figures for the control group were unchanged,” said.

“Health coaching is a resource-intensive intervention. However, dishing out brochures to patients with diabetes and thinking that this would help is also a costly approach for the society,” he added.

Source; Business standard


New drug may stop spread of breast cancer

Researchers have identified a new compound that completely halts the spread of metastatic breast cancer in mice.

The vast majority of deaths from cancer result from its progressive spread to vital organs such as the brain and lungs – a process known as metastasis.

In a recent series of studies researchers identified a previously unknown critical role for a potential cancer causing gene, Bcl3, in metastatic breast cancer.

“We showed that suppressing this gene reduced the spread of cancer by more than 80 per cent,” said Dr Richard Clarkson from Cardiff University’s European Cancer Stem Cell Research Institute.

“Our next goal was to then find a way to suppress Bcl3 pharmacologically. Despite great improvements in therapy of early stage breast cancer, the current therapeutic options for patients with late stage metastatic disease are limited.

“There is therefore a clear unmet clinical need to identify new drugs to reverse or at least to slow down disease progression,” he added.

Clarkson and his team joined up with researchers Dr Andrea Brancale and Dr Andrew Westwell from the Cardiff University School of Pharmacy and Pharmaceutical Sciences, to develop small chemical inhibitors of the Bcl3 gene.

Computer aided modelling of how the Bcl3 gene functions inside the cell allowed the group to identify a pocket on the surface of Bcl3 essential for its function.
By screening a virtual compound library for chemicals that could fit inside this pocket, using state-of-the-art computer software, they identified a drug candidate that potently inhibits Bcl3.

The compound was then trialled on mice with metastatic disease. The resulting effect was that the drug completely inhibited the development of the mice’s metastatic tumours.
Researchers are now working to conduct clinical trials of the compound. The aim is to develop a therapeutic agent capable of blocking metastatic disease in breast cancer and a variety of tumour types.

Source: Business Standard


Laugh your way to good health

Laughter is the best medicine, is an age-old saying, and about 10,000 laughter clubs in India are a testimony to the fact that the therapy works.

A combination of group laughter exercises with yoga breathing, which allows people to laugh without cracking jokes, should be performed for at least 15 to 20 minutes, says Hasya yoga guru Jiten Kohi.

“The good chemical changes in the body can happen only if you spend time on it. The effects won’t be great if you finish your asanas quickly,” Kohi said.

“Such asanas are good for depressed people or those who lead stressful lives,” he added.

Rahul Chandhok, senior consultant psychiatrist at Gurgaon’s Fortis Hospital, pointed out that while work pressure has always been there, other factors like commuting and traffic are adding to the woes of people.

“In the metros one needs to commute for long hours; therefore, people are unable to give time to their families or even take out time for themselves. This causes stress,” Chandhok said.

Another reason is that everyone is competing with everyone for everything. In big cities, day-to-day life is getting more and more hectic and target, desire and deadline driven and the fight against stress overload multiplies.

“People end up comparing themselves to others, they want something that is way beyond their reach. All this causes stress,” Chandhok said.

“Unlike big cities, the smaller ones are at an advantage as far as distance is concerned. People don’t take long to commute from home to the workplace. But, yes, there are comparison factors that cause stress,” he added.

Kohi formed Hasya Yoga Kendra in 2000 because he felt that laughter – the healthiest gesture in people’s lives – is missing.

“As people grow up, they forget to laugh. Nowadays they just exercise. Don’t take it as exercise and laugh like a child. Take things lightly without pressurising your brain. This way you will be less stressful and that will help to stay fit in some way,” said Kohi.

His team holds around 52 yoga classes per day in areas like Model Town, Kalkaji and Janakpuri in the capital, apart from monthly sessions in Tihar Jail, in schools and at corporate houses.

With 300 centres in the country in places like Lucknow, Mumbai, Jaipur and Indore, Kohi gets better response in tier-II cities.

“People in small towns are more interested. Thousands of them turn up in the morning. In metropolitan cities, people lead busy lives; so maybe there are people who are able to join us in parks,” said Kohi, who believes it’s best to do asanas early morning in view of the relatively fresh air.

Apart from other recreational activities, laughter exercises help in improving the well-being of people.

“If you laugh wholeheartedly, your facial muscles will gain benefits and there will be a feeling of well-being, especially when you do such exercises in a group. Your body releases chemicals that help to relieve stress,” Ravindra Gupta, consultant in internal medicine at Gurgaon’s Columbia Asia Hospital, said.

However, he clarified that laughter can de-stress, but it can’t cure ailments.

“It can’t treat ailments. It can reduce blood pressure to some extent, but medication is required,” said Gupta.

Echoing this, Madan Kataria, founder of Laughter Yoga International, says laughter-based exercises help the immune system.

“When you laugh, the stress level goes down and you don’t easily fall sick,” said Kataria, who started his institution with his wife Madhuri in 1995 in Mumbai.

“In people with blood pressure, heart disease and diabetes, we have noticed a 50 percent improvement in their health due to laughter exercises. I am not saying it completely cures diseases, but there is reduction in medication,” he explained.

Kataria said there are around 10,000 laughter clubs in India and the demand is increasing in other parts of the world too.

“They are present in around 72 countries like Japan, Germany and US,” he said.

Chandhok said that yoga or meditation or laughter sessions are important for a healthy life, but medical treatment is equally vital.

“Treatment is essential. Complete it and then continue with these healthy activities,” he said.

So, step out and have a hearty laugh…..ha, ha, ha, ha!

Source: Times of India


Recipe: Baby Corn salad

Ingredients

• 2 cups Baby Corn (finely sliced)
• 1 cup Peas (boiled)
• 1 cup Black Gram (sprouted)
• 1 tsp Pepper Powder
• 1 tsp Sugar
• 1 tsp Lime Juice
• Salt (to taste)
• Boiled Water

How to make

Place the baby corn in boiled water for 10 minutes, until tender.

In a large mixing bowl, add peas, black gram, pepper powder, sugar, lime juice and salt. Mix well.

Filter the water and add the baby corn to the bowl.

Mix well and serve.

Source: Zee news


A pill ‘melts away’ common form of leukaemia

Use of a twice-daily pill could turn a deadly blood cancer into a highly treatable disease, according to scientists at Weill Cornell Medical College who led a multinational research team.

Their findings on the therapy for chronic lymphocytic leukaemia (CLL), reported in the New England Journal of Medicine, suggest that patients may be able to avoid having to take debilitating chemotherapy.

CLL is the most common form of leukaemia, a cancer of the white blood cells. Some 16,000 Americans are diagnosed with CLL annually, and about 5,000 die of it each year.

“The treatment today for CLL can be worse than the disease, leading to a great deal of side effects and death. This study, and others we have conducted on idelalisib, demonstrates that we may no longer need to use chemotherapy in CLL,” says the lead investigator, Dr Richard R Furman, the Richard A Stratton Associate Professor in Haematology and Oncology at Weill Cornell Medical College and a haematologist/oncologist at New York-Presbyterian/Weill Cornell Medical Centre. “Even if this cancer remains incurable, it now can be treated as if it was a chronic disease with a pill, in the same way that high blood pressure is treated.”

CLL is a cancer of B cells, which normally produce antibodies to fight infections. In CLL, B cells grow out of control, accumulating in all of a patient’s organs. Patients are typically treated with a combination of chemotherapeutic drugs, to which they commonly respond. Unfortunately, patients ultimately relapse and require repeated cycles of chemotherapy. With each relapse, the remissions become shorter until the patient either no longer responds, or is forced to stop taking the drugs because of their side effects, which are a result of the medications’ inability to differentiate between healthy cells and cancer cells.

In this randomized, double-blinded study, researchers from 19 medical centres in five countries tested a combination of two targeted drugs – medications that attack cancer without damaging healthy cells. They compared rituximab and idelalisib against rituximab and a placebo pill in 220 CLL patients who could not receive chemotherapy.

They found that those who received the combination of idelalisib and rituximab went longer without their disease worsening than those who received only rituximab, which has been the standard of care. Six months into the study, cancers in 93 per cent of participants in the combination therapy group had not worsened, compared to 46 per cent of those in the rituximab plus placebo group.

What’s more, just 13 per cent of patients treated with rituximab alone responded to the therapy, compared to 81 per cent of the participants in the idelalisib treatment group. A higher percentage of patients who received both drugs – some 92 per cent – were still alive a year after the study began, compared to 80 per cent of those who only received rituximab. About the same percentage of patients in each group suffered side effects from the treatments.

The contrast was so significant that an independent data-monitoring committee halted the study early, in October 2013, so that all of the study participants could receive idelalisib.

“We saw incredible responses in patients who used idelalisib. Their cancer quickly melted away,” says Dr Furman, who is also director of Weill Cornell’s CLL Research Centre and an associate professor of medicine. “These types of responses were even seen in patients who didn’t respond to chemotherapy.”

Chemotherapy-resistant patients are typically the most difficult patients to treat. “It is remarkable how quickly idelalisib worked in this heavily treated group of patients, many of whom were resistant to chemotherapy. We saw responses within a week,” Dr Furman says.

Previous studies led by Weill Cornell Medical College have shown equally significant results in newly diagnosed CLL patients and in those who could tolerate chemotherapy.

“Having a treatment like idelalisib, which is highly effective and well tolerated, and thus can generate responses in patients that are unable to tolerate treatment and unlikely to respond, indicates the potential for idelalisib in all patients,” Dr Furman says.

Idelalisib is the second targeted drug that Dr Furman has tested that shows strong activity against CLL. He also studied ibrutinib in a phase 2 clinical trial reported last July in the New England Journal of Medicine. Both drugs, known as tyrosine kinase inhibitors, work on different targets within the same molecular pathway.

Ibrutinib was approved for use in mantle cell lymphoma (another B cell lymphoma) in November by the US Food and Drug Administration. Because it targets B cells, Dr Furman is using the drug as a first-line treatment for all of his CLL patients — even those who are newly diagnosed. “I am now able to avoid all use of chemotherapy in these patients, which has long been my goal,” he says.

Dr Furman believes idelalisib and ibrutinib will become the treatments of choice for all B cell lymphomas. “These drugs will change the lives of many patients,” he says. “Given the long-term toxicities of chemotherapy, leading to bone marrow failure, infections, and death, moving this therapy up front in the treatment algorithm and providing it to all patients is the next step.”

The study was funded by Gilead, for which Dr Furman has served as an advisor.

Source: India Medical Times


Sibling relationships tied to children’s vocabulary skills

siblingsIn large families, young kids can’t always get a lot of individual attention from parents – but healthy interactions with an older sibling might help compensate for that, a new study suggests.

How older children interact with their siblings is tied to the younger children’s development, Canadian researchers found.

“The idea is that here is this effect of being in a large family where you don’t get that many resources, but if you get an older sibling that’s really attuned to your needs that would be a modifying effect,” Jennifer Jenkins told Reuters Health.

Jenkins is the study’s senior author and the Atkinson Chair of Early Child Development and Education at the University of Toronto.

Previous research had found that children from large families tend to score lower on vocabulary, IQ and other academic tests, compared to those from smaller families.

“That’s been pretty well examined that the larger the family, the less good the child’s skill in language and IQ,” Jenkins said. “It’s really thought of as a resource dilution.”

For example, if a couple has a second child, the attention they spent on their first child will then be split among both kids.

She cautioned that whatever effect a large family may have on a child is small, however.

To see whether an older sibling can possibly fill in for some of that diluted attention, the researchers used data from an existing trial that included families from Toronto with 385 young children who had a sibling at least four years older.

Mothers and older siblings were scored on how they interacted with the younger child.

For example, the researchers scored whether the older sibling or mother were sensitive to the younger sibling’s abilities and gave positive feedback.

The younger sibling’s vocabulary was also tested by having the child point to an object’s picture after its named was said out loud.

The researchers found that children with many siblings tended to score lower on the vocabulary test, compared to those who had smaller families.

Children from large families whose older siblings scored higher during the interaction, however, tended to score higher on the test than those whose older brother or sister scored lower during the interaction.

The association between an older sibling’s so-called cognitive sensitivity and the younger child’s score remained strong even when the researchers also accounted for traits that might have influenced the results, such as gender and age.

While the overall association may be small, Jenkins said many traits that are associated with similar cognitive delays are of a similar size.

“It’s multiple and multiple accumulating influences,” she said. “I think all of these small influences are worth paying attention to.”

Jenkins said the next step would be to develop a trial to test a program that encourages older siblings to have better interactions with their younger brothers and sisters to see if that improves the younger siblings’ cognitive abilities.

That, she said, would also help show that the older sibling’s interactions cause better outcomes in their younger brothers and sisters instead of just showing that the two are somehow linked – as this study does.

The study also has some limitations, including not knowing what kind of interactions the younger children’s other siblings have with each other.

Jenkins and her colleagues write in the journal Pediatrics on Monday that it’s also possible that the association is reversed and that the younger child’s abilities influence the type of interactions their older siblings have with them.

“Siblings really play this very strong role in how kids come out,” Jenkins said. “I’d like people to think about those sibling relationships a little bit more and then how to strengthen them.”

Source: Reuters

 


Helping Smokers Quit, or Not Start in the First Place

“Even 50 years after the first surgeon general’s report on smoking and health, we’re still finding out new ways that tobacco kills and maims people,” Dr. Thomas Frieden, director of the Centers for Disease Control and Prevention, recently told me. “It’s astonishing how bad it is.”

Dr. Frieden and public health specialists everywhere are seeking better ways to help the 44 million Americans who still smoke to quit and to keep young people from getting hooked on cigarettes. “Fewer than 2 percent of doctors smoke. Why can’t we get to that rate in society as a whole?” he wondered.

One reason: Smoking rates are highest among the poor, poorly educated and people with mental illness, populations hard to reach with educational messages and quit-smoking aids.

But when I mentioned to Dr. Frieden, a former New York City health commissioner, that the city’s streets are filled with young adult smokers who appear to be well educated and well dressed, he said television seems to have had an outsize influence.

Focus groups of white girls in New York private schools have suggested a “Sex in the City” effect, he said: Girls think smoking makes them look sexy. In the last two years, middle-aged men, too, have begun smoking in increasing numbers after a half-century decline. Dr. Frieden cited “Mad Men,” the popular TV series featuring admen in the early 1960s, when well over half of American men smoked.

Dr. Frieden said that an antismoking effort begun in 2008 by the World Health Organization “can make a huge difference in curbing smoking, and we should fully implement what we know works.” The program is called Mpower:

M stands for monitoring tobacco use and the effectiveness of prevention programs like antismoking videos on YouTube.

P for protecting people from secondhand smoke. Half the country still lacks laws mandating smoke-free public places. The latest national health survey found that about half of children from nonsmoking households have metabolites of tobacco in their blood, Dr. Frieden said.

O for offering help to the 70 percent of smokers who say they would like to quit. “Tobacco use remains egregiously undertreated in health care settings,” Dr. Helene M. Cole, associate editor of JAMA, The Journal of the American Medical Association, and Dr. Michael C. Fiore, a professor of medicine at the University of Wisconsin, wrote this month in the journal.

Medical aids for quitting smoking, which can triple the likelihood of success, should become available, without a co-pay, to many more people under the Affordable Care Act, Dr. Frieden said.

W for warning about smoking hazards through larger and more graphic messages on cigarette packs and paid advertising on radio and television.

E for enforcing bans on tobacco marketing, advertising, promotion and sponsorships. In bodegas throughout the country, Dr. Frieden said, “tobacco ads are used as wallpaper.” Smoking is freely depicted in movies and popular TV shows.

R for raising taxes, which studies have shown is the single most effective way to reduce smoking in the population, especially among teens.

“A higher cigarette tax is not a regressive tax, because it would help poor people even more than the well-to-do,” Dr. Frieden noted. President Obama has proposed an additional 94-cent-per-pack tax on cigarettes, which would yield $80 billion to fund universal prekindergarten.

Smokers ready to quit can choose from among a cornucopia of aids as wide-ranging as nicotine substitutes, low-dose antidepressants, hypnosis and acupuncture. While none by itself has a high rate of success, different methods have proved effective for different people. Many former smokers required several attempts before they managed to quit for good.

But quitting smoking does not necessarily require assistance. As two public health specialists, Andrea L. Smith and Simon Chapman at the University of Sydney in Australia, have pointed out, “The vast majority of quitters do so unaided.” A Gallup Poll conducted last year in the United States found that “only 8 percent of ex-smokers attributed their success to [nicotine replacement therapy] patches, gum or prescribed drugs,” these experts noted. “In contrast, 48 percent attributed their success to quitting ‘cold turkey’ and 8 percent to willpower, commitment or ‘mind over matter’.”

They added, “For many smokers, having a reason to quit (a why) was more important than having a method to quit (a how).”

For my husband, who smoked a pack a day for 50 years, the “why” was his distress at seeing two beautiful young nieces smoking; he made a pact with them to quit if they would, and he followed through.

Techniques that can help people trying to quit when troubled by the urge to smoke include waiting 10 minutes and distracting yourself; avoiding situations you associate with smoking, at least until you have become a committed ex-smoker; using stress reducers like physical activity, yoga, deep breathing, muscle relaxation and self-hypnosis; seeking moral support from a nonsmoking friend, family member or online stop-smoking program; and oral distractions like chewing sugarless gum or raw vegetables.

Electronic cigarettes are being promoted by some as a way to resist the real thing. E-cigarettes, invented in 2003 by a Chinese pharmacist, contain liquid nicotine that is heated to produce a vapor, not smoke. More than 200 brands are now on the market; they combine nicotine with flavorings like chocolate and tobacco.

But their contents are not regulated, and their long-term safety has not been established. In one study, 30 percent were found to produce known carcinogens. Dr. Frieden said that while e-cigarettes “have the potential to help some people quit,” the method would backfire “if it gets kids to start smoking, gets smokers who would have quit to continue to smoke, gets ex-smokers to go back to smoking, or re-glamorizes smoking.”

Nearly two million children in American middle and high schools have already used e-cigarettes, Dr. Frieden said. In an editorial in the Canadian Medical Association Journal last year, Dr. Matthew B. Stanbrook, an assistant professor of medicine at the University of Toronto, suggested that fruit-flavored e-cigarettes and endorsements by movie stars could lure teens who would not otherwise smoke into acquiring a nicotine habit.

A survey in 2011 of 75,643 South Korean youths in grades 7 through 12 by researchers at the University of California, San Francisco, revealed that four of five e-cigarette users also smoked tobacco. It could happen here: Stanton A. Glantz, the study’s senior author and a professor of medicine at the university, described e-cigarettes as “a new route to nicotine addiction for kids.”

Source: New York Times