AMPK activation facilitates glucose metabolism and enhances the way your cells uptake glucose
Its a movie trope for a reason
eLife 5 , e16351 (2016)
Its more likely another underlying issue, like iron deficiency, medications or hypothyroidism, causes brittle nails, but biotin can help improve the condition. What we do know is that eating foods with biotin assists the enzymes that break down fats, carbs and proteins in your food
Adusumilli VS, Walker TL, Overall RW, Klatt GM, Zeidan SA, Zocher S, et al
While toxic levels are typically only achieved through vitamin supplements, if large quantities of fat-soluble vitamins are consumed, either through foods or supplements, vitamin levels can build up in the liver and fatty tissues, leading to symptoms of toxicity