Here are some web sites that have health information especially prepared for seniors.

AARP (formerly the American Association of Retired Persons)
http://www.aarp.org
This site contains information on health, finances, leisure and advocacy for people 50 years and older.

Administration on Aging Elders & Families
http://www.aoa.gov/AoARoot/Elders_Families/index.aspx
The Department of Health and Human Services/Administration on Aging website is designed to assist older people and their families or caregivers to quickly obtain information on a variety of aging-related topics and government-sponsored programs.

Centers for Medicare & Medicaid
http://www.medicare.gov/
Official U.S. government site for people with Medicare. Information on Medicare health plans, the Medicare drug benefit, Medigap insurance plans, links to state information, long term care information, full text of pamphlets, online forms to request a replacement Medicare card, to change an address or to determine eligibility.

Eldercare Locator
http://www.eldercare.gov/Eldercare.NET/Public/Home.aspx/
This site will help find local agencies, in every U.S. community, that can help older persons and their families access home care, caregiver support services, transportation and meal services.

Health and Age
http://www.healthandage.com

Basic information on a number of common conditions, diseases and preventive health care information.  It includes a news feed and a question-and-answer column.

Mayo Clinic Senior Health Center
http://www.mayoclinic.com/health/senior-health/HA99999
Very readable articles on aging, conditions that often affect older adults, and healthy living.  There is a section on drugs and supplements.

MedlinePlus Seniors’ Health Issues
http://www.nlm.nih.gov/medlineplus/seniorshealthissues.html
Created by the National Library of Medicine (NLM), contains links to trustworthy information throughout the web including the latest news, overviews of senior health issues, research, statistics, aging organizations, clinical trials, and more.

NIH Senior Health
http://nihseniorhealth.gov/
NIH SeniorHealth makes aging-related health information easily accessible for family members and friends seeking reliable, easy to understand online health information.  This source provides a trainer's toolkit for teaching health information to older adults.

Senior Brigade
http://www.seniorbrigade.com
This website is a clearinghouse for information on consumer protection, financial matters, health care issues and veterans' services.  It provides a link to state and federal programs to help seniors make informed decisions.

Social Security Online Services
http://www.socialsecurity.gov
This government site enables seniors to apply for retirement, spouse's or disability benefits.  Seniors can also request a Medicare replacement card, as well as other useful information.

USA.gov for Senior Citizens’ Resources
http://www.usa.gov/Topics/Seniors.shtml
Extensive links to government agencies and other organizations that provide services and programs for seniors. Links to consumer protection resources for seniors, money and taxes, end-of-life issues, health and housing for seniors.