Drinking green tea could modulate the effects of smoking on lung cancer, suggests a hospital-based, randomized study presented at the AACR-IASLC Joint Conference on Molecular Origins of Lung Cancer.

Researchers enrolled 170 patients with lung cancer and 340 healthy patients as controls.  The team administered questionnaires to obtain demographic characteristics, cigarette smoking habits, green tea consumption, dietary intake of fruits and vegetables, cooking practices and family history of lung cancer. They also performed genotyping on insulin-like growth factors as polymorphisms on the following insulin-like growth factors: IGF1, IGF2 and IGFBP3, which have all been reported to be associated with cancer risk.

Blocking the function of an enzyme called cPLA2 with a specific kind of vitamin E can prevent nerve cells from dying after a stroke, new research published in the Journal of Neurochemistry suggests. Using mouse brain cells, scientists found that the tocotrienol (TCT) form of vitamin E stopped the enzyme from releasing fatty acids that eventually kill neurons.

Vitamin E occurs naturally in eight different forms. The best-known form of vitamin E belongs to a variety called tocopherols. The form of vitamin E in this study, tocotrienol or TCT, is not abundant in the American diet but is available as a nutritional supplement. It is a common component of a typical Southeast Asian diet.

No matter what you do for a living, you're likely to consistently feel better mentally and physically on the weekend, according to a study of daily mood variation in employed adults. Dubbed the 'weekend effect', this tendency to feel  better on your days off is largely associated with the freedom to choose how you spend your time, the study's authors suggest. 

While exerting willpower is an important part of losing weight, new evidence suggests that their may be more to successful dieting than simply trying to eat less. Cognitive scientists from Indiana University and the Max Planck Institute for Human Development in Berlin have found that the perceived complexity of diets themselves can also have a big influence on the pounds shed. Their research was published in the journal Appetite.
 

Policy makers and lobbyists who want to enact a carbon tax would do well to choose their words carefully, say Columbia University Psychologists. In a new study in Psychological Science, the research team suggests that since voters typically don't like higher taxes, policy proposals aimed at reducing CO2 emissions should be referred to as 'carbon offsets' in order to generate the most public support. The semantic trick even works on those who are most resistant to a political response to climate change--Republicans. 

 Giving up caffeine does not relieve tinnitus and acute caffeine withdrawal may actually add to the problem, according to a new study published in the International Journal of Audiology.