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How low should your blood pressure be?


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A landmark study indicates that lowering the top number to 120 mm Hg can reduce the risk of cardiovascular problems and death.

Medical practice usually evolves fairly slowly. Experts meet every five to 10 years to review study findings and make recommendations. But occasionally the results of a single study are so decisive that it is brought to a halt early, the results are announced, and doctors change their advice to patients based on the findings. For example, in 2002 the Women's Health Initiative was stopped three years early when postmenopausal women taking estrogen and progestin were found to be at higher risk of heart disease, stroke, and breast cancer than those who weren't on the hormones. The use of postmenopausal hormone therapy fell 70% in the next few years.

Why you fall-and what you can do about it


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Falling has become a major health issue for many older adults, but there is much you can do to reduce your risk.

When we were kids, falling usually meant a skinned knee or a scraped elbow. But with age, taking a tumble can have graver consequences, including hip fractures and traumatic brain injuries. Each year, one in three seniors falls, and one in five of those falls results in a serious injury.

Vanquishing varicose veins


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The raised, tortuous vessels may be controlled with support hose, and they can be eradicated in a quick, outpatient procedure.

Varicose veins are one cardiovascular condition that usually isn't considered serious or life-threatening. Around half of all women have them, and most regard them as a cosmetic annoyance. However, they can be responsible for swollen legs, skin changes, and the development of leg ulcers.

Study suggests tai chi improves life for people with chronic health problems


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Research we're watching

An analysis published online Sept. 17, 2015, by the British Journal of Sports Medicine suggests that doing tai chi enhances the quality of life for people with common chronic conditions.

Researchers analyzed data from 33 studies involving nearly 1,600 adults. Most were in their 60s or 70s, and all had one or more chronic conditions: osteoarthritis, breast cancer, heart failure, or chronic obstructive pulmonary disease (COPD). All 290 participants in the breast cancer studies were women. There were 452 women (85% of participants) in the arthritis studies, 76 (16%) in the heart failure studies, and 92 (19%) in the COPD studies.

Can you find a good night’s sleep at the drugstore?

Almost everyone suffers from trouble sleeping at one time or another. Insomnia — defined as trouble falling asleep or staying asleep — isn't a single disorder itself, but rather a general symptom, like fever or pain.

Because insomnia is so common, you can walk into any drugstore and find a bewildering variety of over-the-counter sleep products. And people are buying them. One small survey of people ages 60 and over found that more than a quarter had taken nonprescription sleeping aids in the preceding year — and that one in 12 did so daily.

Ask the doctor: Are diet drinks safe?

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Q. I've been drinking Fresca since I was in college. Lately I've been reading that diet drinks may cause weight gain and have other bad effects. Is that true?

A. There is some controversy about whether drinking diet soda helps or hurts in maintaining or achieving a healthy weight. Some studies show that people who consume artificially sweetened drinks take in fewer calories and are better able to control their weight. However, other studies show the opposite—that consuming diet drinks may result in weight gain as well as type 2 diabetes.

A few things you might not know about alcohol

Beer, wine, and spirits are foods as well as intoxicants that have different effects in women than in men.

In the first episode of the sitcom "Grace and Frankie," the title characters, played by Jane Fonda and Lily Tomlin, are ordering drinks before dinner. When carb-conscious Fonda sends the breadbasket away and asks for a very dry vodka martini, Tomlin reminds her that vodka is made from potatoes. Fonda responds, "Alcohol has its own rules."

What you can gain by exercising longer and harder

New evidence indicates that more frequent and more vigorous activity can turn back the biological clock.

Fifteen minutes of vigorous exercise or 30 minutes of moderate activity several times a week can reduce your risk of cardiovascular disease, obesity, diabetes, cancer, depression, and dementia. But according to recent studies, exercising even more vigorously for longer periods may have additional benefits by taking years off your biological age. It does so by increasing aerobic capacity—the amount of oxygen you can take in and distribute to your tissues in a minute. "Some studies have indicated that people in their 80s who exercised at high intensity for 20 to 45 minutes a day have an aerobic capacity of people 30 years younger," says Dr. J. Andrew Taylor, director of the cardiovascular research laboratory at Harvard-affiliated Spaulding Rehabilitation Network.

Research we're watching: Working overtime may raise stroke risk

If you're "leaning in" by putting in extra hours on the job, you may be gaining gender equality that you don't want—the same stroke risk as your male colleagues. A recent analysis indicates that women who work 55 hours or more per week have a 30% higher risk of having a stroke than those working standard hours, making them just as likely to have a stroke as their male counterparts.

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The analysis, published online Aug. 20, 2015, by The Lancet, was conducted by European public health re-searchers. It involved data from over 600,000 women and men enrolled in long-term observational studies in Europe and the United States. It was the first such analysis of the relationship between working long hours and stroke. The researchers noted several factors that might have contributed to the elevated stroke risk, including the additional stress of balancing the extra work hours, inactivity, long periods of sitting, and ignoring stroke warning signs.

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