John Edward Swartzberg, M.D.

Health Professional

John Edward Swartzberg, M.D., F.A.C.P., is clinical professor emeritus of medicine at the University of California, Berkeley, School of Public Health and at the University of California, San Francisco, School of Medicine. An internist with 26 years of clinical experience, he is a specialist in infectious disease. Dr. Swartzberg has been chair of the editorial board of the UC Berkeley Wellness Letter since 2001, and writes regular columns for He was the coauthor of the Complete Home Wellness Handbook (2001).

Latest by John Edward Swartzberg, M.D.

Woman adding salt to pot cooking on stove.
Risk Factors

Salt Sensitivity: The Surprising Danger to Your Heart

Blood pressure in some people rises moderately to dramatically when excess salt is consumed. This can affect people with or without high blood pressure.

Woman getting flu shot at pharmacy counter image.
Risk Factors

When Is It Too Early to Get a Flu Shot?

Getting vaccinated for the flu in late summer, particularly for older adults, may mean less protection from the virus as flu season ramps up in the winter.

Purple acid-reducing pill in blister pack.

The Risks of Acid-Reducing Drugs

Proton pump inhibitors are the most effective medicines for reducing stomach acid. But studies suggest those drugs have several serious downsides.

highlighted stomach

What Causes Gastritis? How to Protect Your Gut

If you have persistent stomach distress, don’t take it lightly: It could be gastritis. Here’s how it’s caused and how to find relief.

Older person depressed staring at floor.

How to Lift Late-Life Depression

Many older adults mistakenly believe their sadness is a normal part of aging. But untreated late-life depression can intensify. Here’s how to find help.

doctor talking to middle aged man about revascularization

What to Do If Your Doctor Suggests Revascularization

If you have pain in your legs from peripheral artery disease, your doctor may suggest a procedure called revascularization. Here’s what to know first.

older man with leg pain walking upstairs image

Peripheral Artery Disease: An Undertreated Threat

If you have peripheral artery disease, chances are you could be doing more to lower your risk of serious complications, such as heart attack or stroke.

doctor preparing patient for procedure

The Lowdown on Testosterone Replacement Therapy

Sales of prescription testosterone pills, gels, and patches have soared. But are they necessary? And do they work? Here’s the latest evidence.

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Why Sitting Too Much Is Not Good for You

The average adult sits for nearly eight hours a day. Here’s why that’s harmful to your health, and what you can do about it.

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4 Simple Ways to Avoid Overuse Injuries

Tendinitis and stress fractures are common among people who do the same exercise repeatedly or often. Here’s how you can help prevent them.