C
Chris Masterjohn
Ph.D. nutrition scientist known for detailed micronutrient and biochemistry education.
Current Stack
Masterjohn Micronutrient Stack
supplement
Primary
Cadence: Daily - 3000-5000 IU vitamin A equivalent
Dosage: Uses cod liver oil as best natural source of vitamins A and D with omega-3s.
Source: Cod Liver Oil - Chris Masterjohn
supplement
Primary
Cadence: Daily - 1700 IU average (test-guided)
Dosage: Recommends aiming for 30-40 ng/mL blood levels; emphasizes testing to guide dosing.
Source: Vitamin D3 - Chris Masterjohn
supplement
Primary
Cadence: Daily - As part of fat-soluble vitamin stack
Dosage: Emphasizes K2 importance; notes food tops at 200mcg while therapeutic doses can be 45mg.
Source: Vitamin K2 - Chris Masterjohn
activity
Primary
Cadence: Daily - Daily egg yolks and fermented foods
Dosage: Emphasizes getting nutrients from food first: liver once weekly egg yolks daily fermented foods.
activity
Secondary
Cadence: Weekly - Oysters clams and liver
Dosage: Recommends oysters beef cheese for zinc; clams liver oysters for B12.
activity
Secondary
Cadence: Daily - Adequate from whole foods
Dosage: Tracks diet in Cronometer to ensure all micronutrient needs are met from food.
Source: Fiber Intake - Chris Masterjohn