Scientists say they’ve finally discovered why smokers tend to gain some weight when they kick the habit. It turns out that nicotine can rev up brain cells that normally signal people to stop eating when they’re full, researchers report in Friday’s edition of the journal Science. The weight connection isn’t huge: On average, quitters gain less than 10 pounds. Still, it’s a worry that many smokers cite when asked... 

Scientists say they’ve finally discovered why smokers tend to gain some weight when they kick the habit. It turns out that nicotine can rev up brain cells that normally signal people to stop eating when they’re full, researchers report in Friday’s edition of the journal Science. The weight connection isn’t huge: On average, quitters gain less than 10 pounds. Still, it’s a worry that many smokers cite when asked... 

Children who live in homes with visible mold problems have a heightened risk of suffering from asthma and allergies, a new research review finds. Researchers found that across 61 international studies since the 1990s, children living in water-damaged, moldy homes were more likely to have asthma, wheezing problems or nasal allergies than their peers. The findings do not prove that mold is the culprit, according to the study’s lead researcher. However,...