Understand the biology behind your habits.
Make sense of your nutrition markers. Discover what they measure, how everyday choices influence them, and where food fits in.
Explore the guidesFollow your curiosity.
Start with a result from your report, a nutrient you know, or a question about your next meal.
38 guides to explore
Fatty acidsDHA (C22:6 n-3)
The omega-3 that makes up the structure of brain and retinal tissue.
Fatty acidsDHA to EPA ratio
How your two long-chain omega-3s sit relative to each other.
Fatty acidsEPA (C20:5 n-3)
The omega-3 most closely tied to inflammatory signalling and mood.
Fatty acidsLinoleic acid (LA)
The omega-6 fat that seed oils supply in far larger amounts than the body was built for.
Fatty acidsOleic acid
The monounsaturated fat that dominates olive oil and much of your own body fat.
Fatty acidsOmega-3 Index
The share of your red blood cell membranes made up of the omega-3 fats EPA and DHA.
Fatty acidsOmega-6 to omega-3 ratio
Linoleic acid measured against your combined EPA and DHA.
Fatty acidsTotal EPA+DHA
The absolute amount of long-chain omega-3 on board, rather than the balance between the two.
VitaminsActive vitamin B12
The fraction of vitamin B12 your cells can actually take up and use.
VitaminsTotal Vitamin D
The circulating store of vitamin D, built from sunlight on skin and from what you eat.
VitaminsVitamin A (Retinol)
The preformed vitamin A your eyes, immune system and skin depend on.
VitaminsVitamin E (Alpha-tocopherol)
The main fat-soluble antioxidant guarding your cell membranes from oxidation.
MineralsCopper
A trace mineral your body needs for iron transport, collagen and nerve function.
MineralsCopper:Zinc ratio
The balance between two minerals that compete for the same absorption pathway.
MineralsFerritin
The protein that stores iron, and the best single indicator of how much iron you have banked.
MineralsMagnesium
The mineral behind muscle relaxation and every reaction that uses ATP, measured in whole blood and again inside red cells if you add the Longevity Panel.
MineralsSelenium
A trace mineral your thyroid and antioxidant enzymes cannot work without, measured in whole blood and again inside red cells if you add the Longevity Panel.
MineralsZinc
A cofactor for hundreds of enzymes, measured in whole blood and again inside red cells if you add the Longevity Panel.
LongevityNAD+
The coenzyme every cell uses to turn fuel into energy and to repair DNA.
HormonesCortisol
The main stress hormone, and the one that sets your daily energy rhythm.
HormonesTestosterone/Cortisol ratio
The balance between the hormone that builds tissue and the one that breaks it down.
HormonesTotal Testosterone
The full circulating amount of testosterone, both bound and free.
Amino acidsArginine
The amino acid your blood vessels use to make nitric oxide.
Amino acidsAsparagine
A non-essential amino acid your liver makes, used in nerve function and nitrogen transport.
Amino acidsBCAA to tyrosine ratio
Muscle-building amino acids measured against the dopamine precursor.
Amino acidsBranched-chain amino acids (BCAA)
Leucine, isoleucine and valine, the three amino acids muscle burns and builds with.
Amino acidsCarnitine
The shuttle that carries fatty acids into mitochondria to be burned for energy.
Amino acidsCitrulline
The amino acid that converts to arginine and drives blood flow during exercise.
Amino acidsGlutamine
The most abundant amino acid in your blood, and the main fuel for gut and immune cells.
Amino acidsGlutamine to proline ratio
Gut-lining fuel measured against connective tissue repair material.
Amino acidsProline
The amino acid that gives collagen its structure, and therefore your skin, joints and blood vessels.
Amino acidsTaurine
A sulphur amino acid concentrated in heart, muscle and nerve tissue.
Amino acidsThreonine
The essential amino acid your gut uses to build its protective mucus layer.
Amino acidsTryptophan
The essential amino acid your body turns into serotonin and melatonin.
Amino acidsTryptophan to tyrosine ratio
The serotonin precursor measured against the dopamine precursor.
Amino acidsTyrosine
The amino acid behind dopamine, noradrenaline and thyroid hormone.
Amino acidsValine
One of the three branched-chain amino acids, used in muscle repair and nitrogen balance.
IndexWestern Lifestyle Index
A single score for how far your biomarkers sit from their optimal ranges across three domains.
One index. Several everyday influences.
The Western Lifestyle Index brings diet, sleep and stress signals from your biomarkers into one view. Learn how to read it, and what it can and cannot tell you.
Understand your index