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New Harvard research has found that not all trendy low-carb diets are equal when it comes to maintaining weight — some may even make you gain a few pounds. People who consume low-carb diets that emphasize plant-based proteins and healthy fats have a better chance of keeping excess weight gain at bay than those who eat low-carb diets comprised mostly of meat and unhealthy fats, according to results of a decades-long study published Wednesday in JAMA Network Open. “Our study goes beyond the simple question of, ‘To carb or not to carb?’ ” lead study author Binkai Liu, a research...

Middle-aged people who get roughly half their daily calories from carbohydrates live several years longer on average than those with meat-heavy low-carb diets, researchers reported Friday. The findings, published in The Lancet medical journal, challenge a trend in Europe and North America toward so-called Paleo diets that shun carbohydrates in favour of animal protein and fat. Proponents of these "Stone Age" diets argue that the rapid shift 10,000 years ago -- with the advent of agriculture -- to grains, dairy and legumes has not allowed the human body enough time to adapt to these high-carb foods. For the study, receiving...

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