This is a critical distinction that separates legitimate supplements backed by research from products that borrow scientific credibility without earning it
In trials, average results were strong, but people did not all lose the same amount of weight or get the same level of glucose improvement
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The available research suggests that the most important nutritional side effects of GLP-1 drugs include inadequate protein intake, loss of lean muscle mass, vitamin D deficiency, B-vitamin problems including thiamine, iron depletion, anemia, and low intake of key minerals like calcium, magnesium, and potassium
Randy Seeley, a GLP-1 researcher and the director of the University of Michigans Nutrition Obesity Research Center