1. Middle-Age Heart Risk Factors Shorten Men's Lives - US News and World Report
Smoking, hypertension, high cholesterol cut 10 years of life, study finds

2. Study Pinpoints Risk Factors for Death in Young Stroke Victims - US News and World Report
Many can be modified, treated to improve odds, experts say

3. Head lice : Causes, incidence, and risk factors  (Trust Mark: Doctor-Reviewed)
Head lice infect hair on the head. They are easiest to see on the neck and over the ears. Tiny eggs on the hair look like flakes of dandruff. However, instead of flaking off the scalp, they stay put. Head lice can survive up to 30 days on a human....• Reviewer: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

4. Lice Infestation  (Trust Mark: Doctor-Reviewed)
Lice infestations (pediculosis) are infections of the skin, hair, or genital region caused by lice living directly on the body or in hats or other garments. Lice are small wingless insect-like parasites with sucking mouthparts that feed on human b...• Author: Rebecca J. Frey Ph.D.