The Peptide Report
Taking vitamin D alone may be sending calcium to your arteries instead of your bones. Inside the calcium paradox — and the doctor-formulated D3+K2 stack the longevity community has been quietly recommending.
A head-to-head comparison of standalone vitamin D3 versus combined D3+K2 formulas — and why K2 is the cofactor that decides whether calcium ends up in your bones or your arteries.
High-dose vitamin D without K2 may be sending calcium to the wrong places. Here's what longevity researchers are quietly doing differently in 2026 — and the vegan formula leading the reformulation.
