The journal Annals of Internal Medicine recently published a paper suggesting there is no evidence supporting the longstanding recommendation to limit saturated fat consumption. Media reporting on the paper included headlines such as “No link found between saturated fat and heart disease” and articles saying “Saturated fat shouldn’t be demonized” springing up on social media.
How might a high-protein, low-carb diet lead to weight loss more quickly than a low-fat, high-carb diet, at least in the short run?
- First, chicken, beef, fish, beans, and other high-protein foods move more slowly from the stomach to the intestine. Slower stomach emptying means you feel full for longer and get hungrier later.
We’ve been told that regularly eating soy-based foods lowers cholesterol, calms hot flashes, prevents breast and prostate cancer, aids weight loss, and wards off osteoporosis. Some of these benefits have been attributed to a unique characteristic of soybeans—their high concentration of isoflavones, a type of plant-made estrogen (phytoestrogen). However, some of the claims made for soy were based on preliminary evidence.
In the U.S., people eat an average of 126 pounds of potatoes per person each year. (1) However, potatoes don’t count as a vegetable on Harvard’s Healthy Eating Plate because they are high in carbohydrate – and in particular, the kind of carbohydrate that the body digests rapidly, causing blood sugar and insulin to surge and then dip (in scientific terms, they have a high glycemic load).
Coverage from Swiss Re, featuring HSPH’s Frank Hu
Coverage from Baltimore Sun, featuring HSPH’s Eric Rimm
For general good health, the 2008 Physical Activity Guidelines for Americans recommends that adults get a minimum of 2-1/2 hours per week of moderate-intensity aerobic activity. (37) Yet many people may need more than 2-1/2 hours of moderate intensity activity a week to stay at a stable weight. (37)
Coverage from Today.com, featuring HSPH’s Rob van Dam
Coverage from Canadian Obesity Network, featuring HSPH’s Dariush Mozaffarian
Coverage from Jamie Oliver Food Foundation, featuring HSPH’s Walter Willett