Top stories in health and medicine, September 28, 2012

This series is brought to you by MedPage Today.

1. Anxiety Drug Use May Boost Dementia Risk. Older patients who used benzodiazepine anti-anxiety drugs were at substantially higher risk of developing dementia than nonusers.

2. HIV Therapy Universally Effective. HIV therapy is equally effective regardless of race, ethnicity, sex, or economic class — as long as patients can be engaged and retained in care.

3. Get Flu Shot, Experts Urge. Despite a relatively mild influenza season last year, it remains important to get vaccinated this and every year.