Diabetes Archive

Articles

Pandemic weight gain: Not your imagination

A study described in a research letter published March 22, 2021, by JAMA Network Open found that participants steadily gained weight during the first part of the pandemic, from February to June 2020.

Can a diabetes drug transform the treatment of obesity?

In people with obesity, a high-dose weekly injection of the diabetes drug semaglutide caused a 15% weight loss and improved other heart-related risk factors. Semaglutide works by mimicking a substance called GLP-1, which is made naturally by the gut and the brain. It prods the pancreas to release insulin when blood sugar rises too high, reduces appetite, and makes people feel full following a meal.

Is your daily nap doing more harm than good?

Naps can be healthy for adults who need to catch up on sleep or work odd hours, but they can also make it more difficult to sleep at night and be a sign of a sleep disorder. Naps should be short and limited to the early afternoon to prevent them from interfering with nighttime sleep. People who have the urge to nap daily should consider whether they need to improve their nighttime sleep habits.

Excess weight linked with worse heart health even if you exercise

In the journals

Can you be "fat and fit" — that is, overweight but still healthy because of regular exercise? There is no simple answer. But one study says that activity does not entirely reverse the effects weight has on heart health. The findings were published online Jan. 26, 2021, by the European Journal of Preventive Cardiology.

The study involved more than 527,000 adults, almost 70% of whom were men. People were placed into three groups based on their body mass index (BMI): normal, overweight, and obese. They also were grouped by activity level: regularly active (the minimum requirement from the World Health Organization, or WHO); insufficiently active (less than the WHO minimum, but some moderate to vigorous physical activity every week), and no exercise.

Want healthy eyes? What to know at 40 and beyond

While eye problems can affect people of any age, some conditions become more common after age 40. Some are normal, or at least expected; others are of greater concern and will require treatment. Here’s how to keep your eyes healthy and address certain problems.

Conquer your fear of dietary fat

For decades, high intake of fat was thought to cause weight gain, heart disease, and maybe even cancer. The solution? Go low-fat, which often meant consuming more carbs and more sugar. But nutritionists now suggest people actually need adequate amounts of "good" unsaturated fat, and less "bad" saturated fat, for optimal health. Following popular heart-healthy diets, like the Mediterranean and MIND diets, and making simple dietary changes can help people get adequate amounts of good fats.

Having one chronic condition can boost the risk for others

Many chronic conditions seem to be related. Examples include obesity, high blood pressure, type 2 diabetes, high cholesterol, and heart disease; hearing loss and dementia; obstructive sleep apnea and high blood pressure; various autoimmune diseases; and obesity and joint problems. People with chronic conditions should ask their doctors about the risk for associated diseases.In some cases, they should have certain health screenings to check for them. In other cases, additional screening isn't automatic.

12 minutes of exercise might lower risks for heart disease and diabetes

News briefs

Ever wonder how much exercise time it takes to start reducing your risk for heart disease and diabetes? It could be as little as 12 minutes, according to a Harvard study published Nov. 17, 2020, in Circulation. Scientists analyzed blood from more than 400 middle-aged men and women before and just after they'd pedaled for 12 minutes on cycling machines, reaching a vigorous rate. In particular, scientists measured levels of almost 600 natural body chemicals (metabolites). Exercise produced significant changes in most metabolites. For example, the level of one metabolite linked to heart disease and diabetes fell by 29%. Another metabolite tied to diabetes risk and liver disease fell by 18%. That suggests, but doesn't prove, that 12 minutes of daily exercise (that includes vigorous activity) might reduce the risk of heart disease and diabetes. What if you're more of a moderate-intensity exerciser? "We don't know yet if moderate-intensity exercise would have a similar effect on metabolites. But study participants started off with very light exercise, and each minute the intensity increased," says Dr. Gregory Lewis, the study's senior author and a cardiologist at Harvard-affiliated Massachusetts General Hospital.

Image: © artvea/Getty Images

Can you supercharge the Mediterranean diet?

News briefs

A Mediterranean-style diet is rich in vegetables, legumes, fruits, whole grains, nuts, seeds, poultry, fish, and olive oil, and it's associated with lower risks for heart disease and diabetes. And a "greener" version of the eating style might be even more effective, according to a small, randomized study published online Nov. 23, 2020, by the journal Heart. Researchers — some from Harvard — recruited about 300 sedentary, middle-aged people (mostly men) with high cholesterol or abdominal obesity and divided them into three groups. One received guidance for exercise and a healthy diet; another received exercise guidance and was assigned to eat a calorie-restricted Mediterranean diet; and one group received exercise guidance and was assigned to eat a "greener" calorie-restricted Mediterranean diet with less animal-based and more plant-based proteins (including walnuts and a type of duckweed — an aquatic plant), plus lots of green tea. After six months, people on the "green" diet had lost more weight and inches around their middles, and had bigger drops in cholesterol, than people in the other two groups. "Green" dieters also had steeper declines in insulin resistance, inflammation markers, and diastolic blood pressure (the lower number in the measurement), compared with the other two groups.

Image: © Lilechka75/Getty Images

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