The supplements almost everyone benefits from. Address these foundational deficiencies before spending money on anything more targeted.
The foundational health stack is vitamin D3/K2 (2,000–4,000 IU D3 + 100–200mcg K2), omega-3 (1,000–2,000mg EPA+DHA), magnesium glycinate (300–400mg), and zinc picolinate (15–30mg). These four address the most common micronutrient insufficiencies in Western populations. An estimated 42% of US adults are vitamin D insufficient. Omega-3 deficiency is near-universal in populations not eating oily fish 2–3x/week. Magnesium depletion affects 45–50% of Americans. Fix these before spending money on anything else.
ℹ️ This stack is for informational purposes only. Always consult a healthcare provider before starting supplements, especially if you take medication or have a medical condition.
Vitamin D3 is a steroid hormone precursor affecting over 1,000 gene expression pathways including immune function, muscle protein synthesis, testosterone production, calcium absorption, and mood regulation. An estimated 42% of US adults are deficient. K2 (MK-7 form) ensures calcium is directed to bones and teeth rather than soft tissues — critical when supplementing D3 at doses above 2,000 IU.
EPA and DHA are the bioactive omega-3 fatty acids — found in oily fish, not plant sources like flaxseed (ALA has poor conversion to EPA/DHA in humans). Multiple large RCTs support cardiovascular protection, anti-inflammatory effects, and mental health benefits. The REDUCE-IT trial (8,179 patients) found 4g/day EPA reduced cardiovascular events by 25%. For general health, 1,000–2,000mg EPA+DHA is the evidence-based target.
Magnesium is a cofactor in 300+ enzymatic reactions including protein synthesis, ATP production, nerve transmission, and muscle contraction. An estimated 45–50% of Americans fail to meet the recommended daily intake. Deficiency manifests as muscle cramps, poor sleep, fatigue, and anxiety. Glycinate form is the most bioavailable and least likely to cause the laxative effect of oxide and citrate.
Zinc is essential for testosterone synthesis, immune function, protein synthesis, wound healing, and taste/smell. Athletes and people with high protein intake excrete more zinc. Picolinate form has demonstrated superior absorption vs oxide and gluconate. 15–30mg/day is the evidence-based range — higher doses (above 40mg) can impair copper absorption.
If budget requires choosing, prioritise in this order: 1. Vitamin D3/K2 — highest prevalence of deficiency with broadest health impact. 2. Omega-3 — near-universal insufficiency in non-fish-eaters. 3. Magnesium — depleted by stress, poor sleep, and exercise. 4. Zinc — particularly important for athletes and those eating high protein diets.
1. Forrest KY, Stuhldreher WL. (2011). Prevalence and correlates of vitamin D deficiency in US adults. Nutr Res. 2. Bhatt DL et al. (2019). REDUCE-IT trial: Cardiovascular risk reduction with EPA. NEJM. 3. DiNicolantonio JJ et al. (2018). Subclinical magnesium deficiency: a principal driver of cardiovascular disease. BMJ Open Heart.
9 evidence-based supplement combinations for muscle, sleep, fat loss, cognition and more.
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