Your Guide to Being Well and Staying Healthy
Browse the Knowledgebase
Diseases & Conditions
Tap into this interactive encyclopedia for instant access to information on more than 835 diseases and conditions.
Tests & Procedures
Information on more than 370 topics, featuring illustrations designed to clarify complex anatomy and procedures.
Drug Reference
This comprehensive drug reference answers your medication questions: 33,000 prescriptions, over-the-counter products, and neutraceuticals.
Herbs, Vitamins & Supplements
Discover medically validated uses for vitamins, minerals, amino acids, and other substances used as nutritional supplements.
Wellness Library
1,700 articles on common diseases and conditions, plus fitness, nutrition, safety, workplace issues, and parenting.
Symptom Checker and Care Guides
Health Tip of the Day
Avoiding Corns, Calluses
If the shoe fits, wear it, and you probably won't develop a corn or callus. Corns and calluses can be caused by pressure from a shoe against the foot, according to the American Academy of Orthopaedic Surgeons. Corns and calluses most often develop on the big toe and fifth toe. Relieving the pressure on the foot is the best treatment for a corn or callus, and this is usually accomplished by changing the shoe.