01/04/2026
NEW YEAR RESOLUTION AND THE LIES ABOUT WEIGHT LOSS
https://www.nature.com/articles/s41591-025-03842-0?utm_source=klaviyo&utm_medium=email&utm_campaign=%28Friday%20Email%20-%20Chris%20Kresser%20General%20News%29%20Chris%27s%20Friday%20Favorites&utm_term=Nature%20Medicine&utm_content=Nature%20Medicine&_kx=ZpXBDTeEF9QJhwDqQXXrImrT_HpFsBz1ZlYMbsx_Vq0.my75y6
Getting healthy is obviously on a lot of people's minds this week. Hopefully not to fade away unnecessarily soon. And among these priorities is often trying to bring body weight and body composition in line with optimal metrics.
A couple of years ago I got into an argument with a colleague personal trainer. The topic was about pre-and post workout high-protein meals. He kept pushing highly processed protein breakfast bars on his clients, to maximize muscle gains from his prescribed exercise routines, and I had advised some of our common patients against that based on metabolic health research, steering them instead to try to meet those goals with a few high protein naturally occurring foods. His mantra was that regardless of the source the metabolic effect was going to be the same and that some of these designer foods were actually a better value. There was a fair amount of research already back then about the fallacy of that statement, and this most recent piece of research puts the last nail in the coffin of the flawed processed food theory.
What struck me about this piece of research is not necessarily the end result, which is in line with previous research, but the scale of the differential of weight loss/weight gain based on the food source. We're talking about DOUBLE the weight loss and weight gain by simply sticking with unprocessed foods. And you have to remember that everything else in micronutrient and calories were exactly the same between both groups.
Let me flesh this out in practical terms: for the same amount of calories, and the same amount of proteins versus carbohydrates, and unprocessed food has a vastly different metabolic effect on your weight. ..
https://www.bwclinic.com/blog/2026/1/4/new-year-resolution-weight-and-real-food