Diet & Weight Loss Archive

Weight-loss surgery is now viewed as a way to both prevent and treat health problems linked to extreme obesity, such as diabetes, heart disease, and sleep apnea. Annually, more than 250,000 Americans undergo bariatric procedures, which can help extend their lives. Weight-loss procedures include sleeve gastrectomy, gastric bypass, and gastric banding, which reduce stomach size and change the way the body absorbs food. The surgery adds to other weight-loss measures such as diet, exercise, and medications.

The American Heart Association recently revised its checklist for achieving optimal heart health. Adequate sleep was added, and updates were made to previous recommendations for diet, cholesterol and blood sugar measurements, and nicotine exposure.

Hybrid exercise training combines heart-pumping aerobic action with muscle-strengthening moves in the same exercise session. The strategy has the advantage of meeting two key goals of the federal Physical Activity Guidelines in one fell swoop. And it also appears to be one of the best—and most time-efficient—ways for people who are overweight to lower their risk of cardiovascular-related risk factors. Strong muscles boost a person's basal metabolic rate—the amount of energy the body needs to keep working during rest. That improves weight-loss efforts by ramping up the number of calories burned.

Too much or too little potassium can harm the heart. Diet, medications, and kidney function can affect the body's potassium level. Dietary potassium helps keep blood pressure in a normal range, but most Americans don't consume enough of this mineral. However, people taking medications that raise potassium levels—which includes certain drugs to treat high blood pressure and heart failure—should avoid salt substitutes made with potassium chloride.

Recent guidelines suggest a blood pressure reading of less than 120/80 mm Hg as normal. But the ideal number for individuals depends on their individual goals and whether they also have a chronic condition, such as heart disease or kidney disease.

Limiting meals to a certain window of time each day, an approach called time-restricted eating, didn't appear to help people lose any more weight compared with ordinary calorie restriction in a small randomized trial published in 2022.

Misperceptions and biases about obesity can derail progress against this common disease, which affects 42% of Americans and is linked to many serious health problems, including heart disease. Bias and stigma against people with obesity is widespread, often due to a belief that poor choices and lack of motivation are the only causes. But a number of interconnected factors are involved, including an obesity-promoting environment, lack of physical activity, genetics, insufficient sleep, mental health issues, and certain medications.

A new study suggests a high-fiber diet may protect against dementia. In a group of about 3,700 older adults, those who consumed the most fiber (about 20 grams daily) had the lowest rates of dementia, and those who ate the least fiber (8 grams daily) had the highest rates.

People who work the night shift might benefit from eating their meals during daytime hours. A 2021 study found a rise in blood sugar in people following night shift hours who ate some meals at night, but not in those who ate all meals during the day.

A study published online Jan. 15, 2022, by Appetite suggested that people’s expectations of how full they will feel after eating can influence their actual food intake.