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Rhonda Patrick, a biomedical scientist and founder of FoundMyFitness, emphasizes: "NAD+ levels can go up when we exercise or fast, but NAD+ precursors like NR and NMN boost them further, supporting energy production and cellular repair."[17] She notes that combining lifestyle with supplementation yields optimal results

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The clinical trial protocol uses fixed doses (2mg, 4mg, 8mg, 12mg) regardless of body weight

Then Of Course, there are others, who never take any supplements, in the hope that they either will digest and absorb all that they need from the foods that they eat or are not really too bothered