EverydayHealth.com recently merged with Revolution Health which links 24 separate health sites catering to various interests. EverydayHealth.com allows consumers to create personalized home pages with health news and advice tailored to their interests, or to join community groups or start their own health blog. Another useful feature is calculators, including ones for calorie intake and body-mass index.

CarePages.com, allows hospitalized patients and families to set up their own Web sites to keep relatives and friends posted on the patient’s progress.

WebMD.com has expanded its offerings to include a new interactive diet and nutrition center and has struck a deal with the FDA to send public-health alerts to registered users.

Healthline.com includes a prescription medication image gallery; pill finder profiles to help identify medication by size, shape, color and visible markings; and new risk assessments, quizzes and calculators such as body-mass index calculator and breast cancer-risk assessment.

VisualDxHealth.com offers some 2,000 medical images and information to help identify more than 180 skin diseases, rashes and conditions; allows searches by age, sex and body part. Interactive quizzes on recognizing skin cancer.

QualityHealth.com offers health-risk assessments, symptom checker, and personalized lists of questions to ask your doctor based on conditions and symptoms.

HealthCentral.com is a network of sites covering various conditional such as attention deficit hyperactivity disorder and diabetes. Users can sign up for news alerts and updates, join communities and watch videos of experts discussing treatments. The home page has a symptom checker that can be used to check by gender and body part.

Wellsphere.com sends text-message reminders to go to the gym or take your medication, and sends daily health and fitness tips; allows users to log fitness goals on a mobile phone. Provides nutrition information for menu items at restaurants and suggests healthier alternatives.

Healthvault.com allows individuals and families to create their own free online medical records and to share these with physicians if they choose. Despite concerns about security and privacy, there is something pretty appealing about having your medical history, medication lists and lab reports on a secure Web site that you can get to in an emergency, particularly since most doctors still haven’t switched to electronic medical records in their offices. The Web site also allows users to refill prescriptions online at participation local drugstores and to seek a second opinion on a medical question via an online consulting service from partner The Cleveland Clinic (for a $565 fee). Microsoft’s features include programs that can link to home devices such as a blood glucose meter or a heart-rate monitor to track readings and provide them to physicians. is the interactive site used last Conference, offering quizzes to determine biological age based on 150 questions about health status and behaviors.