Study shows vaginal birth and breast-feeding create different intestinal bacteria from C-section and formula

Researchers suspect this could indicate worse form of disease

Findings could help in battle against the eye disease

Review of studies shows exercise, with or without education, dramatically cuts the risk

While study can't prove cause-and-effect, increasing damage seen as dose rises

Lifelong screening recommended to detect problems early

Facial drooping, sudden arm weakness or speech problems signal need for help, experts say

Consumers can still sign up for health-care coverage through Jan. 31

Discuss the answers with your doctor

Especially if you're asthmatic