When Tufts University researchers studied the waistlines and diets of 459 people, they found that even in men of similar age and activity level, those who ate white bread frequently weighed more than those who didn’t. “The calories from white bread and refined grains just seem to settle at the waistline more than calories from other foods,” says Katherine Tucker, Ph.D., the study author.
Lack of sleep doesn't just cause undereye bags, a grouchy mood, and an insane craving for coffee; studies on sleep continually show that a lack of sleep means a bigger appetite and BMI. For example, in a 2002 study of over one million people, scientists found a direct correlation between less sleep and a higher BMI for anything under seven hours/night. More recently, a 2016 study published in the journal SLEEP found that sleep-deprived people reported more hunger and had a harder time resisting unhealthy snacks—even when they had had a huge meal (that supplied 90 percent of their daily caloric intake) only two hours prior. The scientists said that sleep deprivation activated a similar system that's targeted by the active ingredient in marijuana and enhances the desire for food.
A study from Canada’s McMaster University (partly funded by Dairy Farmers of Canada) put women on several different diets (lower protein, low dairy; lower protein, medium dairy; higher protein, high dairy) and found they all lost the same amount of weight — but that the higher-protein, high-dairy group lost the most belly fat while also gaining and holding onto the most muscle mass. “It seems… increasing calcium and protein in the diet may help to further promote loss of fat from the worst storage area in the body,” said Andrea Josse, lead author of the study.
A little garlic in your meals could mean a lot less weight around your middle. The results of a Korean study found that mice given a high-fat diet supplemented with garlic lost significantly more weight and abdominal fat than those who just ate fatty foods. Even better, they also improved their liver health, making it easier to stay healthy and burn off that excess fat in the long term. For more flavorful ways to make your food more enjoyable, turn to the 20 Spicy Recipes That Fire Up Your Metabolism and watch those pounds melt away.
"Inadequate intake of calories, especially protein, causes the body to breakdown muscle tissue to meet the needs for amino acids," says Cederquist. "I have my patients focus on obtaining adequate lean protein and spreading it throughout the day." Her recommendation: focus on 100 grams per day, which breaks down into three to four ounces of protein at breakfast, lunch, and dinner, and a few ounces for snacks.
Eat more protein. Protein is required by the body to repair damaged cells and plays a vital role in growth and development. But it can also play a role in weight loss. Diets high in protein tend to make people feel fuller, and when paired with a reduction in carbohydrate intake these diets can help with weight loss. However, it's important to remember that not all sources of protein are good for you: red meat and full-fat dairy products, though high in protein, can also increase the risk of heart disease. Good sources of protein include:
While many people turn to artificial sweeteners in a misguided attempt to whittle their waistlines, those fake sugars are likely to have the opposite effect. According to researchers at Yale, artificial sweeteners are actually linked with an increased risk of abdominal obesity and weight gain, possibly because they can trigger cravings for the real stuff and spike insulin levels in a similar fashion to real sugar.