All gym-goers should take this vitamin before their next workout

The article promotes Transparent Labs’ vitamin D3 and K2 supplement, claiming the vitamins may support bone health and other aspects of wellness. It cites research on bone density, but the study described involved postmenopausal women taking calcium and vitamin D as well as K2, rather than gym-goers or people preparing for a workout.

The reported three-year trial included 142 women with osteopenia. Those given K2 alongside vitamin D3 and calcium had higher levels of activated osteocalcin, a bone-building protein, than those given a placebo alongside vitamin D3 and calcium. The article also highlights the product’s third-party testing and positive customer reviews; those testimonials are individual experiences, not evidence that the supplement is necessary or effective for everyone.