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Chapter 3 · § 3.2 · Recipe

Personalized Supplements

Only off specific genetic, bloodwork, or allergy signal.

By · Updated March 2026 · Last reviewed March 2026 · ~6 min

Problem

You've done the exome, the focused bloodwork, and the inflammation panels. The data flags several things. Which supplements earn their place on your shelf beyond the universal four, and how do you decide a dose?

Solution

Each one tied to a specific marker or genetic signal.

SupplementCost/yrEvidenceIndication
Methylated B-vitamins
folate + B12		 $120 A Elevated homocysteine + MTHFR variant. Re-test in 90 days.
Biotin (targeted) $50 B+ Specific biotin-processing variant on exome. See § 6.4.
Zinc $60 B Low serum zinc. Short courses; do not overdo (high-dose zinc tanks copper).
Iron $60 A Low ferritin, esp. women of reproductive age. Never supplement iron blindly.
Probiotics (strain-specific) $120–$500 B Specific GI or inflammation pattern. Strain matters; "generic probiotic" is noise.
Curcumin (bioavailable form) $120–$300 B Elevated hs-CRP, joint inflammation. Use phytosome or piperine-potentiated.
CoQ10 $120–$300 B Statin users, fatigue + low energy.
Ashwagandha $60–$180 B Chronic stress + poor HRV. Short courses, not indefinite.
Berberine $120–$300 B Borderline insulin resistance. Diet and exercise first; this second.

The total of any personalized list should be small — two or three items for most people, up to five or six for a complex picture. If your personalized list is ten items, you are chasing marketing, not signal.

Discussion

The principle underneath this table: a supplement earns a dose because a specific test value — either from the genome or from a bloodwork or inflammation panel — came back in a way that the supplement's mechanism actually addresses. Every item above has a specific if-then underneath it.

Converging signals beat single-source signals every time. Elevated homocysteine alone is ambiguous. Elevated homocysteine + MTHFR variant + a diet light on leafy greens is three converging signals pointing at one change: methyl-folate + methyl-B12, plus more folate-rich food, plus a homocysteine re-test in 90 days. That is when a recommendation gets specific enough to act on.

△ Warning Do not combine supplements blindly. Iron and calcium compete at the gut. High-dose zinc tanks copper. Curcumin thins blood. If you are stacking more than two of these, sequence them at different times of day and tell your physician.

The biotin case (§ 6.4) is the cleanest example I have of this. A participant's exome flagged a biotin-processing variant. An IgE autoimmune panel surfaced complementary GI signal. The recommendation that fell out was a targeted biotin dose at a specific level plus a structured weightlifting regimen. Result: >45 lbs of weight loss and a 9-year drop in biological age. No single layer would have produced that recommendation on its own — the integration is what produced it.

See Also

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