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Green tea can make your teeth stronger

A cup of green tea a day may keep the dentist away. That’s the conclusion of a new study published in Preventive Medicine, reports Discovery News. Green tea contains antimicrobial molecules called catechins that may promote dental health, researchers claim.

“Green tea may have bacteriocidal effects, which would affect teeth, but only if you drink it without sugar,” said Alfredo Morabia, of Columbia University in New York and editor of Preventive Medicine.

“They also reported that drinking sweet coffee was actually deleterious,” he added. “Coffee alone had no problem, but sweet coffee would actually make you lose your teeth.” To reach the conclusion, Yasushi Koyama of the Tohoku University Graduate School of Medicine and colleagues looked at more than 25,000 Japanese men and women between age 40 and 64.

Secondhand smoke ‘raises chronic sinus problems’

People are at increased risk for developing rhinosinusitis from exposure to secondhand smoke, a new study has found.

The Henry Ford Health System study is believed to be the first time researchers evaluated the association between secondhand smoke and chronic rhinosinusitis.
Chronic rhinosinusitis, or CRS, is a form of sinusitis in which the moist tissues of the nose and paranasal sinuses are inflamed for at least 12 weeks.

The findings are being published in the April issue of the Archives of Otolaryngology-Head & Neck Surgery. “Our findings reaffirm the health hazards of secondhand smoke," says Amanda Holm, MPH, a co-author of the study and project manager in Henry Ford's Centre for Health Promotion and Disease Prevention.

“The poisons found in secondhand smoke are quite an irritant to the sinus and nasal passages and are a major contributor to the development of rhinosinusitis.”

Holm says primary care physicians and otolaryngologists should advise their patients to avoid secondhand smoke whenever possible.

Well-cooked meat may  increase bladder cancer risk

Frequently eating meat, especially the one which is well done or cooked at high temperatures, may increase your chances of developing bladder cancer, according to a new study.

The University of Texas M. D. Anderson Cancer Centre study was presented at the American Association for Cancer Research 101st Annual Meeting 2010.

“It’s well known that meat cooked at high temperatures generates heterocyclic amines (HCAs) that can cause cancer,” said study presenter Jie Lin, PhD, assistant professor in MD Anderson’s Department of Epidemiology. “We wanted to find out if meat consumption increases the risk of developing bladder cancer and how genetic differences may play a part.”

HCAs form when muscle meats, such as beef, pork, poultry or fish, are cooked at high temperatures. They are products of interaction between amino acids, which are the foundation of proteins, and the chemical creatine, which is stored in muscles.

Past research has identified 17 HCAs that may contribute to cancer. This study, which took place over 12 years, included 884 M. D. Anderson patients with bladder cancer and 878 people who did not have cancer. They were matched by age, gender and ethnicity.

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