Diet & Weight Loss Archive

Most adults need seven to nine hours of sleep each night, but more than one-third consistently sleep fewer than seven. Reasons for poor sleep include pregnancy, menopausal night sweats, medication use, sleep disorders, and various illnesses. Sleep deprivation can raise the risks for such conditions as diabetes, certain cancers, obesity, dementia, depression, and heart disease. To promote sounder sleep, people can keep consistent sleep-wake schedules, reduce intake of caffeine and alcohol, and avoid using electronic devices before bed.

Some doctors recommend eating meals earlier in the day to control weight, and some evidence backs that up. For example, a 2022 study found that eating later in the day increased hunger and fat storage, and decreased appetite-reducing hormone levels and fat burning. To eat meals earlier in the day, one approach is eating either two large meals per day (a large breakfast and a second large meal in midafternoon) or at least having a third meal that ends by 5 p.m.

A 2022 study found that eating later in the day increases hunger, decreases the number of calories a person burns, and promotes fat storage. Over time, those effects could lead to weight gain.

People who use artificial sweeteners such as aspartame (NutraSweet, Equal), acesulfame potassium (Sunnett, Sweet One), and sucralose (Splenda) may have a higher risk of cardiovascular disease compared with people who avoid these products. These zero-calorie sweeteners might not help people lose weight, and experts postulate that artificial sweeteners may trigger inflammation and alter normal metabolism, the gut microbiome, and blood vessels in ways that promote type 2 diabetes, unhealthy cholesterol levels, and high blood pressure.

People with attention-deficit hyperactivity disorder, a condition marked by trouble focusing and impulsive behavior, may be more likely to have cardiovascular disease that people without the disorder.

By age 40, one in five women has dealt with an eating disorder, twice the proportion of women known to be affected by age 21. Risks for anorexia, bulimia, and binge eating can rise at midlife due to job stressors, an empty nest, and dating again after divorce or widowhood. Health effects can include bone loss, heart problems, lung conditions, gastrointestinal issues, diabetes, and skin breakdown. Signs of an eating disorder include dramatic weight fluctuations, excessive exercising, and preoccupation with weight, calories, and body size and shape.

Unhealthy lifestyle habits, chronic diseases, and genetic conditions can damage the kidneys and reduce their ability to do their many jobs. But many precautions can help protect the kidneys. Examples include controlling diabetes; lowering high blood pressure; moderating intake of salt, alcohol, and protein; limiting intake of oxalate-rich foods such as spinach, almonds, or cashews; losing weight; stopping smoking; exercising regularly; staying hydrated; limiting the use of nonsteroidal anti-inflammatory drugs (NSAIDs); and getting annual kidney function tests.

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.

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.