A mild injury can cause structural disruption of axons in the brain while also changing the way the neurons fire in areas where they have not been structurally altered.
Reusable grocery bags can infect people with the norovirus, which yearly hospitalizes 800,000 people and kills another 800, a infectious virus that causes severe vomiting and diarrhea.
Researchers found that that almost 2 million new cancer cases in 2008 were caused by the human papilloma virus, hepatitis B, hepatitis C, and the stomach bacterium Helicobacter pylori
The obesity rate among women has stayed flat, but other groups, including higher-income men, are continuing to put on weight, and more obese people are becoming severely obese.
