Kidney Beans
Overview
Kidney beans provide plant protein, polyphenols, and prebiotic fiber, supporting gut health and neurotransmitter synthesis. Kidney beans have a DIAAS score of 60-65, indicating they are methionine-limited and should be paired with grains for complete amino acid profile. Kidney beans are polyphenol-rich and support gut health through prebiotic fiber and polyphenol effects on the microbiome.
Recipes
Substances
3 substances in this food
Iron
Oxygen transport; dopamine synthesis (tyrosine hydroxylase cofactor)
Magnesium
Enzymatic cofactor (>300 reactions); neurotransmitters; mitochondria; redox balance
Vitamin B9 (Folate; 5-MTHF)
One-carbon metabolism; methylation; homocysteine recycling
Preparation Notes
- Soak and cook thoroughly to reduce phytates and improve mineral bioavailability; soaking and sprouting reduces phytates in legumes/grains, improving non-heme iron and zinc bioavailability
- Pair with grains for complete amino acid profile; pair with whole grains or seeds for amino acid complementarity
- Pair with vitamin C to enhance iron absorption, with studies showing up to a fourfold increase when consumed together
- Part of grain-legume complementarity strategy; grain-legume complementarity improves essential amino-acid coverage
Biological Target Matrix
| Biological Target | Substance | Contribution Level | Therapeutic Areas | Mechanism of Action |
|---|---|---|---|---|
| Metabolic & Neuroendocrine Stress (HPA Axis & ANS) | Magnesium | Contextual / minor contributor | Helps manage stress responses; combined with vitamin D reduced behavioral problems; synergy with zinc and omega-3s reported | |
| Methylation & One-Carbon Metabolism | Vitamin B9 (Folate; 5-MTHF) | Contextual / minor contributor | Essential cofactor in remethylation of homocysteine to methionine, which is converted to S-adenosylmethionine (SAMe); SAMe fuels synthesis of dopamine, norepinephrine, and serotonin and drives phospholipid methylation in neuronal membranes | |
| Mitochondrial Function & Bioenergetics | Iron | Contextual / minor contributor | Critical for oxygen delivery to the brain via hemoglobin; supports mitochondrial function and energy production | |
| Mitochondrial Function & Bioenergetics | Magnesium | Contextual / minor contributor | Supports enzymes involved in glycolysis and the Krebs cycle (processes that generate ATP from glucose); binds to ATP and all triphosphates in cells to activate them | |
| Neurotransmitter Regulation | Iron | Contextual / minor contributor | Essential cofactor for tyrosine hydroxylase, the rate-limiting enzyme in the conversion of tyrosine to dopamine; critical for catecholamine synthesis | |
| Neurotransmitter Regulation | Magnesium | Contextual / minor contributor | Broad cofactor for neurotransmitter synthesis and receptor modulation (e.g., NMDA, GABA); functions as an NMDA receptor antagonist and GABA receptor modulator; assists enzymes involved in synthesis of dopamine and serotonin | |
| Neurotransmitter Regulation | Vitamin B9 (Folate; 5-MTHF) | Contextual / minor contributor | Supports neurotransmitter synthesis through methylation; cofactor for dopamine synthesis alongside iron, B6, and omega-3s |
References
- Kidney beans: DIAAS 60-65, Methionine-limited; polyphenol-rich; supports gut health
- Pair with whole grains or seeds for amino acid complementarity; grain-legume complementarity improves essential amino-acid coverage
- Soaking and sprouting reduces phytates in legumes/grains, improving non-heme iron and zinc bioavailability GREINER and KONIETZNY 1999
- Polyphenol-rich legumes support gut microbiome health; polyphenol sources support gut barrier integrity, TLR4 suppression, LPS neutralization, and microglial activation dampening