A study finds that low-carbohydrate diets emphasizing plant-based proteins and healthy fats are linked to fewer depression symptoms, while diets high in animal proteins and saturated fats show no such benefit, highlighting the importance of food quality in mental health.
The effectiveness of low-carb diets for weight loss lies in the fact that they help people eat fewer calories, rather than any metabolic magic. Low-carb diets can lead to short-term weight loss due to their satiating effect and the elimination of calorie-dense foods. However, in the long run, adherence to any diet is what matters most. When it comes to the calories-out part of the equation, strictly controlled trials have shown that the macronutrient composition of a diet, including carb content, does not significantly impact energy expenditure. Ultimately, weight loss on low-carb diets is primarily attributed to consuming fewer calories.
A new study has found that low fat diets can extend a person's lifespan, while low carb diets can increase the risk of an early death. Researchers from Harvard University and Tulane University teamed up with Chinese scientists to study the links between diet and length of life. They found that people who ate a low fat diet, whether healthy or not, significantly reduced their likelihood of an early death, compared to people on high fat diets. Meanwhile, people on keto-like diets were 28 percent more likely to die from any cause when compared to their high-carb peers.