Health Library

Health Library


Receiving a vaccination activates the immune system's "memory," allowing the body to react quickly by releasing antibodies to future exposures and thereby destroying the bacteria before it can cause illness. When the body develops immunity to a specific antigen, immunizationhas occurred.

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Today’s Interactive Tools and Multimedia

Calculator: Adult Body Mass Tool
Clinical Wizard:
Quiz: Blood Count Quiz
Risk Assesment: Substance Abuse Assessment

Today in Health News

California Trees Harbor Fungus Deadly to People With HIV

A 13-year-old's science fair project helped the discovery along, researchers say

Health Tip of the Day

Keeping Peace With a 2-Year-Old

A child going through the "terrible twos" can be a handful. Here are suggestions for how to survive:

  • Use humor. If you sense a tantrum coming on, find a funny, positive way to distract your toddler.

  • Allow children to make some decisions. How vital is it that their clothes match?

  • Notice good behavior, not just things they do wrong.

  • Limit the choices. Say, "Do you want to watch 'Barney' or 'Sesame Street?'" not, "What do you want to do?"

  • Make sure they get enough sleep. A tired child can be cranky.

  • Avoid bedtime battles. Introduce some quiet activities shortly before bedtime.

Healthy Living

There's a lot of news about cholesterol these days, and with good reason. High cholesterol contributes to heart disease, which kills more Americans than all cancers combined. A regular exercise routine and good eating habits — along with medication if your doctor recommends it — can keep cholesterol levels under control and lower your risk of heart disease.

Health Centers

Bariatric Surgery
If you’re more than 100 pounds overweight, bariatric surgery may be the solution for you. Use this center to learn about the different types of procedures and the risks and benefits of each.

Your Family

Men's Health
You want the best for your child, from good nutrition to effective discipline to a breadth of life opportunities.

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