The July issue of NIH News in Health is now available. Featured stories cover body image and drinking water to stay hydrated. Also, check out the health capsules and the featured Web site.

On July 4th weekend, prevent injuries by using fireworks safely.

E. coli is in the news. To learn more, visit the MedlinePlus health topic pages on E. coli infections and food contamination and poisoning.

Visit the new MedlinePlus Health Topic page on adrenal gland cancer.

A number of disorders can affect the adrenal glands, including several types of cancer. Adrenal gland cancers are uncommon...

Listen to the NLM Director's Comments on acupuncture and back pain. The transcript is also available.

A study of 638 adults found two types of acupuncture – plus a simulated acupuncture treatment using toothpicks – each were significantly better than standard care to help alleviate lower back pain and improve a patient's back function...

Watch a live webcast of total knee replacement surgery on June 30 at 5:00 p.m. EDT, and check out the knee injuries and disorders and knee replacement health topic pages on MedlinePlus.

Also, browse through links to prerecorded webcasts of surgical procedures. These are actual procedures performed at medical centers in the United States.

National HIV Testing Day is on Saturday, June 27. To locate a testing site and to learn more about HIV/AIDS, visit the Centers for Disease Control and Prevention.

Also, check out the AIDS and sexually transmitted diseases health topic pages on MedlinePlus.

Visit the new MedlinePlus Health Topic page on hearing aids.

A hearing aid is a small electronic device that you wear in or behind your ear. It magnifies sound vibrations entering the ear. That makes some sounds louder. A hearing aid can help people hear more in both quiet and noisy situations...

Visit the new MedlinePlus Health Topic page on cochlear implants.

A cochlear implant is a small, complex electronic device that can help to provide a sense of sound. People who are profoundly deaf or severely hard-of-hearing can get help from them. The implant consists of two parts. One part sits on the outside of the body, behind the ear. A second part is surgically placed under the skin...

Visit the new MedlinePlus Health Topic page on platelet disorders.

Platelets help wounds heal and prevent bleeding by forming blood clots. Your bone marrow makes platelets. Problems can result from having too few or too many platelets, or from platelets that do not work properly...

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Listen to the NLM Director's Comments on breastfeeding and reduced disease risk. The transcript is also available.

Women who breastfeed for more than a year reduce their risk to develop high blood pressure, diabetes, and cardiovascular diseases in post menopause, reports a comprehensive study recently published in Obstetrics and Gynecology...

Give your father reliable health information for Father's Day! Sign him up for This Week in Men's Health, the weekly e-mail list that contains the newest men's health information on MedlinePlus.

Also, check out the other MedlinePlus e-mail lists and RSS feeds that deliver up-to-date health information straight to your inbox or favorite RSS reader.

Listen to the NLM Director's Comments for a swine flu update. The transcript is also available.

The World Health Organization (the WHO) recently declared an H1N1 swine flu pandemic; the first global flu epidemic in 41 years. The decision followed an emergency meeting sparked by a spike in the number of swine flu cases in Australia. As of the morning of June 11, 2009, Australia reported 1,224 H1N1 cases....

Check out our page on health check tools. Use these quizzes, calculators, self-assessments and decision guides to check your knowledge and health status.