Immune
Defense + antioxidant capacity
Your immune system is a two-layer defense: a fast innate response (barrier cells, NK cells, complement) and a slower, learned adaptive response (T- and B-cells, antibodies). Both run on micronutrients — vitamin D tunes the response so it fights pathogens without over-firing, vitamin C and zinc are consumed rapidly by activated immune cells, and selenium + copper + the antioxidant vitamins shield those cells from the oxidative burst they use to kill microbes. A shortfall in any of the load-bearing three (D, C, zinc) measurably raises both how often you get sick and how long it lasts.
How your supplements + diet cover this system right now — the nutrients feeding it, where the gaps are, and your own lab readouts.
The load-bearing nutrients — if these are deficient, this system shows symptoms first. Click any to see daily targets, top food sources, and supplements that supply it.
Lab markers that report on this system’s health.
Save a lab session under My Journey → Biomarkers to see your own values for these.
Where the biochemistry happens for this system.
DNA methylation, homocysteine clearance, methyl-donor supply
Glutathione, SOD, catalase — quenching oxidative stress
Hydroxyapatite formation, osteoblast cofactors
T3/T4 synthesis from tyrosine + iodine; deiodinase cofactors
Heme synthesis, erythropoiesis, oxygen carrying capacity
Prebiotic fibre + live cultures → short-chain fatty acids (butyrate)
Systems that share a load-bearing nutrient with this one.