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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

However, several factors support its safety profile

If anything, the morning ritual made me more conscious of my eating patterns

A deficiency can creep up gradually, making it easy to dismiss symptoms as stress or simply getting older. However, if left untreated, low B12 levels can lead to serious health issues

Chronic caloric restriction can elevate cortisol as a stress response