Foundation First

Before adding targeted supplements, the foundation matters: dietary quality, sleep, movement, stress management, and sunlight exposure. No supplement compensates for a poor foundation. The most impactful interventions for metabolic and cardiovascular health are lifestyle-based.

That said, several supplements address genuine nutritional gaps that are difficult to close through diet alone in modern environments — particularly Vitamin D, magnesium, and omega-3s.

The Core Foundation Stack

Vitamin D3 with K2: Vitamin D deficiency is extremely common and affects immune function, metabolic health, cardiovascular risk, and bone density. K2 (MK-7 form) is included to direct calcium to bones rather than arteries. Target serum 25-OH Vitamin D of 50–80 ng/mL.

Magnesium: Involved in over 300 enzymatic processes. Deficiency is common due to soil depletion and modern dietary patterns. Glycinate and malate forms are well-tolerated and bioavailable. Particularly important for sleep quality, glucose metabolism, and blood pressure regulation.

Omega-3s (EPA/DHA): Most people are deficient. Test your Omega-3 Index before and after supplementation. Target >8%. See the Omega-3 Optimization topic for detail.

• Vitamin D3 (2,000–5,000 IU/day) + K2 (100–200 mcg MK-7)
• Magnesium glycinate or malate (300–400 mg/day)
• Omega-3s — dose based on Omega-3 Index testing

Targeted Additions

Beyond the foundation, targeted additions should be based on lab results and specific health priorities — not generic recommendations. Common additions include:

• Berberine: Activates AMPK, improves insulin sensitivity, lowers ApoB and triglycerides. Often compared to metformin in mechanism. 500mg 2–3x/day with meals.
• Creatine monohydrate: One of the most studied supplements. Supports muscle strength, power output, and increasingly recognized for cognitive benefits. 3–5g/day.
• NAC (N-Acetyl Cysteine): Precursor to glutathione. Supports liver detoxification, antioxidant defense, and respiratory health.
• Coenzyme Q10 (CoQ10): Important for mitochondrial energy production. Particularly relevant for those on statin therapy, which depletes CoQ10.
• Zinc + Copper: Zinc supports immune function, testosterone production, and wound healing. Always pair with copper to avoid depletion.

What to Avoid

The supplement market is full of products with weak evidence, poor bioavailability, or misleading marketing. Proprietary blends that hide individual ingredient doses, products with excessive fillers or artificial additives, and supplements making disease treatment claims are all red flags.

More is not better. High-dose supplementation of fat-soluble vitamins (A, D, E, K) can accumulate to toxic levels. Testing before and after supplementation is the most reliable way to confirm both need and response.

Quality and Third-Party Testing

Supplement quality varies enormously. Third-party testing certifications (NSF, USP, Informed Sport) provide independent verification of label accuracy and absence of contaminants. For athletes subject to drug testing, Informed Sport certification is particularly important.

Bioavailability matters. Magnesium oxide is poorly absorbed. Magnesium glycinate or malate are significantly better. Curcumin without piperine or a phospholipid complex has poor bioavailability. Form matters as much as dose.