Diet and nutrition Archive

Large studies have not found evidence of higher rates of heart attacks, strokes, or other cardiovascular diseases in people who eat up to one egg per day.

New guidelines for managing atrial fibrillation focus on lifestyle habits to prevent and control the disorder. One recommendation is for people to limit alcohol to one drink per day, or ideally less. Another is for people who are overweight or obese to lose weight, either by striving for a body mass index no greater than 27 or by shedding at least 10% of their body weight. The guidelines also suggest that people get three to four hours of exercise per week. And people with afib who snore should consider getting tested for sleep apnea.

Every bodily function relies on protein. People's protein needs are based on age, body size, activity levels, and overall health. Harvard experts advise people to consume between 1.2 and 2.0 grams of protein each day for every kilogram (2.2 pounds) of body weight. Women need more protein at certain times, including pregnancy and breastfeeding. People who are competitive athletes or trying to build muscle should also eat higher amounts of protein. Older adults should consume higher amounts to combat age-related muscle loss.

A 2023 study suggests that avoiding low-quality carbohydrates such as refined grains, sugar-sweetened drinks, and starchy vegetables may help middle-aged adults avoid weight gain.

In a 2024 study, people who reported eating plant-based diets were 39% less likely to have had COVID-19, compared with people who said they were meat eaters.

Whole or minimally processed foods tend to be best for heart health. But many processed foods-and even some that are ultra-processed-are also good options, provided people choose wisely. In three large studies, ultra-processed whole-grain bread, breakfast cereals, and yogurt were linked to a lower risk of type 2 diabetes and cardiovascular disease. Artificially and sugar-sweetened beverages, processed meats, and ready-to-eat dishes were linked to higher risks of those conditions.