Smoking May Boost Fat-Fighting Gene

Offering clues to why smokers often gain weight after quitting, a new study suggests that smoking enhances the activity of a gene that helps break down body fat.

Researchers found that compared with non-smokers, a group of healthy smokers showed greater activity in a gene called AZGP1 in cell samples taken from their airways.

Because the gene is thought to be important in breaking down fat and controlling weight, the findings point to one possible reason that smokers tend to weigh less than non-smokers -- and why people often put on pounds after quitting. MORE>>>>>>>>>>>>>