Vitamins, minerals & supplements Archive

There is no evidence that so-called "bioidentical" alternatives to prescription hormones are either safe or effective.

Over the past couple of years, science has validated what many women already know: hot flashes and other symptoms of menopause can persist long after menstrual periods stop. It's also well established that estrogen—alone or combined with a progestin—is the most reliable treatment for menopausal symptoms and that, for most postmenopausal women, it is safe to take these hormones for up to five years at doses that relieve hot flashes.

But in 2002 the Women's Health Initiative reported that Prempro—an FDA-approved preparation combining synthetic estrogens with a progestin—increased the risk of cardiovascular disease and breast cancer. Since then, women have shied away from pharmaceutical companies' hormones. A third of women who use hormones for relief of menopausal symptoms are now choosing custom-mixed preparations from compounding pharmacies, according to research sponsored by the North American Menopause Society (NAMS). Women surveyed by NAMS commonly said they believed "natural" or "bioidentical" hormones from compounding pharmacies to be safer than the available FDA-approved hormones.

A Spanish clinical trial of 400 people—two-thirds of whom were women—has indicated that waiting to fill an antibiotic prescription may be a good idea for people with sniffles, coughs, sore throats, and other respiratory symptoms.

Researchers recruited volunteers who sought care for respiratory symptoms in primary care clinics throughout Spain. The volunteers were randomly assigned to four equal groups. One was given antibiotics and told to take them immediately. Another was sent home without antibiotics but told to return to the clinic if they hadn't improved after several days. The two remaining groups were told to wait to take antibiotics—one was asked to return to the clinic to get their mediation after three days; the other group was given an antibiotic, but told to take the medication only if their symptoms hadn't improved after five to 10 days.

If someone you know has been diagnosed with type 2 diabetes, you might be wondering about how you can lower your own risk. Fortunately, multiple studies have shown that many of the same healthy eating choices that can help your friend or loved one control their diabetes can also help you prevent it. The exact relationship between eating specific types of foods and the risk of developing diabetes remains somewhat controversial. But the study findings are consistent with what experts consider to be healthy eating habits for most adults.

So, if you're interested in lowering your risk of type 2 diabetes, it can't hurt to try getting more of the foods and nutrients that can lower your risk — and to avoid those that can raise it.

This ancient practice can transform the way you think about food and set the stage for a lifetime of healthy eating.

Like most of us, you've probably eaten something in the past few hours. And, like many of us, you may not be able to recall everything you ate, let alone the sensation of eating it. According to a 2011 report from the U.S. Department of Agriculture, the average American spends two-and-a-half hours a day eating, but more than half the time, we're doing something else, too. Because we're working, driving, reading, watching television, or fiddling with an electronic device, we're not fully aware of what we're eating. And this mindless eating—a lack of awareness of the food we're consuming—may be contributing to the national obesity epidemic and other health issues, says Dr. Lilian Cheung, a nutritionist and lecturer at Harvard T.H. Chan School of Public Health.

Research we're watching

Walnuts are loaded with folate, vitamin E, and lots of good fats. Although they are also high in calories, they don't seem to contribute to weight gain. Researchers at Yale University Prevention Research Center wanted to determine if eating walnuts daily could help people at risk for diabetes control their cholesterol and blood sugar.

The researchers randomly assigned 112 people ages 25 to 75—70% of whom were women—to two groups. People in both groups were given 2 ounces of walnuts to eat daily. They were told to eat whatever else they wanted but to keep a record of what they ate. One group was also told to eat 366 fewer calories from other food to compensate for the calories added by the walnuts. Both groups ate the walnuts for six months, and their customary diet without walnuts for another six months.

Research we're watching

A nationwide survey conducted by researchers at Harvard T.H. Chan School of Public Health indicates that prescription drug use rose from 51% of U.S. adults in the 1999–2000 calendar year to 59% in 2011–2012. In 2012, women were taking more prescription medications than men, with 65% taking at least one drug and 16% taking more than five.

Although the use of postmenopausal hormones declined, women's prescriptions for blood pressure medication, cholesterol-lowering drugs, antidepressants, and diabetes medications rose significantly. The study was published in the Nov. 3, 2015, issue of The Journal of the American Medical Association.

Image: Thinkstock

Tau proteins, and not necessarily beta-amyloid, may be the key to unlocking a viable treatment.

Alzheimer's disease affects more than five million people, and that number is expected to more than double by 2050. While there is no cure, attention has refocused on what many researchers believe is a major player in Alzheimer's: tau proteins.

Image: Thinkstock

Targeted cancer therapies have limits, but some may offer a better option than standard chemotherapy.

Mention cancer treatment, and most men think of chemotherapy—complete with hair loss and extreme fatigue. But for some men, there is another option. Targeted therapies can sometimes treat certain cancers with fewer side effects and better outcomes.

Image: Thinkstock

A high-sugar diet may raise heart disease risk. But no-calorie sweeteners aren't ideal alternatives.

If you have a sweet tooth, your heart may be paying the price. Diets high in added sugars have been linked to a host of health woes, including obesity, high blood pressure, high cholesterol, and even a higher risk of dying of heart disease.

Research we're watching

Even if you're not overweight, having a large belly raises your risk of dying of heart disease, a new study suggests.

To explore factors linked to early death, researchers relied on body measurements and other health information gleaned from more than 15,000 adults who took part in a national health survey. The average follow-up period was 14 years.