By Drs. Mehmet Oz and Michael Roizen

At Arlington National Cemetery, the changing of the guard happens like clockwork. Since 1937, regardless of weather or world events, it’s taken place every 30 minutes from 8 a.m. to 7 p.m., April 1 through Sept. 30; every 60 minutes Oct. 1 through March 31; and every two hours when the cemetery is closed.

Heart patients should take note, suggest researchers from the University of Alberta at a recent Canadian Cardiovascular Congress. Many folks with heart disease spend most of their waking hours sitting, lying down and watching TV, and they need to change that up with an iron-clad schedule of seven minutes of light activity, such as walking, every 20 minutes. That way they’ll burn around 770 extra calories a day, help circulation, reduce inflammation and raise their spirits.

But sometimes, as we discussed in our feature a few weeks ago on MitraClip to remedy mitral regurgitation caused by a leaky heart valve, more than lifestyle intervention is needed. Sometimes we have to make a midcourse correction.

Our correction: The MitraClip device, from the health care company Abbott, has been used to treat more than 70,000 (up from 33,000) patients since it was first approved in 2008 (2013 in the U.S.).

Yours: It’s time to change how you guard your heart health by taking charge of your wellbeing (get that pedometer and timer) and working with your doc on medical interventions (be it the MitraClip or antihypertensives, statins, aspirin or diabetes meds). That’ll give you big rewards. So move it and use it, or lose it!

Is your antiperspirant
putting you at risk for dementia?

“Don’t sweat the petty things, and don’t pet the sweaty things,” comedian George Carlin once said. But staying cool, calm and collected isn’t always easy. That may be why as many as 90 percent of Americans use deodorants and antiperspirants regularly, spending $18 billion a year in pursuit of pristine pits.

Ironically, though many of you worry about schvitzing (only 2 percent of you don’t get smelly from sweat in your pits, groin, hands or feet), you also may sweat over the safety of the stuff you’re applying under your arms. One ingredient in antiperspirants (not deodorants), aluminum chlorohydrate, is often targeted as dangerous. It stops you from perspiring by reacting with your sweat and creating gel plugs in your sweat glands’ ducts, shutting them off.

Since the 1960s, when some poorly designed studies made people scared of aluminum (even in frying pans), it’s been rumored that it could contribute to the development of Alzheimer’s disease. But a 2001 study examined aluminum levels in urine of people who used antiperspirant daily and found that only 0.012 percent of aluminum from these products was absorbed through the skin. That’s just about 2.5 percent of the aluminum you’ll absorb over the same time period from food. And a larger review of research, published last year, concluded that there’s not enough evidence to show that regular use of deodorants and antiperspirants increases your risk for dementia.

So that’s one less thing to sweat over. Now where’s that sweaty dog?

Mehmet Oz, M.D. is host of “The Dr. Oz Show,” and Mike Roizen, M.D. is Chief Wellness Officer and Chair of Wellness Institute at Cleveland Clinic. To live your healthiest, tune into “The Dr. Oz Show” or visit