Reviews
The latest from Reviews on Vitalspell.
Vitamin D plus K2 acts like a drug, not a supplement
An Italian cardiology team's narrative review in IJMS reframes combined vitamin D and K2 as a low-potency pharmacological intervention, arguing that the large neutral RCTs tested the wrong populations and ignored K2 as an essential cofactor.
Plant-Based Diets Match Omnivore Diets for Athletic Performance, Review Finds
A 2025 state-of-the-art review in the American Journal of Lifestyle Medicine finds plant-based eating patterns are non-inferior to omnivore diets for athletic performance and muscle protein synthesis. The strongest supplement evidence supports creatine, caffeine, and protein.
The Best Magnesium Supplements of 2026, According to Experts
Forbes Health consulted a panel of accredited nutrition experts to rank the best magnesium supplements of 2026. The top picks span multiple forms, from affordable oxide tablets to premium bisglycinate powders. Here is what the evidence says about which form you actually need.
How To Choose the Right Magnesium Supplement for You
The form of magnesium you choose matters more than the brand. Magnesium glycinate and citrate offer high bioavailability for sleep and general health, while oxide is poorly absorbed and best reserved for heartburn.
Vitamin D plus K2 acts like a drug, not a supplement
An Italian cardiology team's narrative review in IJMS reframes combined vitamin D and K2 as a low-potency pharmacological intervention, arguing that the large neutral RCTs tested the wrong populations and ignored K2 as an essential cofactor.