Wheat
Overview
Wheat, especially in less-refined forms, provides complex carbohydrates, fibre, and minerals such as magnesium, iron, and zinc [2]. It can contribute useful B-vitamin intake and remains a widely used staple that can support dietary energy needs in many meal patterns.
From a protein perspective, wheat is best understood as a grain protein that is typically lysine-limited rather than complete on its own [1,2]. In the BRAIN Diet framework, wheat-based foods are most useful when paired with legumes across meals to improve essential amino-acid balance while maintaining practical dietary variety [1,2].
Key Nutritional Highlights
- Widely consumed staple grain with meaningful B-vitamin and mineral contribution when less refined.
- Nutritional profile changes markedly with refinement level and product type.
- Grain protein is lysine-limited, so amino-acid balance improves when paired with legumes [1,2].
- Food-matrix effects differ between whole-kernel/flour products and highly processed wheat foods.
Food Context
Synergies
- Pair wheat with legumes (e.g. lentils, chickpeas, beans) to improve essential amino-acid balance at meal/day level [1,2].
Sourcing
- Choose less-refined and whole-grain wheat products where tolerated, as they generally retain more fibre and micronutrients than highly refined forms.
Preparation
- Use minimally processed forms and avoid excessive refinement to preserve fibre and micronutrient density.
Essential Amino Acid Profile
Wheat provides a useful plant protein source but is not a complete protein.
Notable amino acids:
- Methionine (relatively higher than in legumes)
Limiting amino acids:
- Lysine (typical of grains)
Protein pairing strategy:
Grains such as wheat are relatively higher in methionine but lysine-limited. Combining with legumes (e.g. lentils, chickpeas) creates a more balanced essential amino acid profile.
Recipes
Nutrient Tables (per 100 g)
Core nutrients
| Nutrient | Amount per 100 g | % RDA per 100 g |
|---|---|---|
| Energy | 250 kcal | — |
| Protein | 10.2 g | — |
| Total fat | 1.5 g | — |
| Saturated fat | 0 g | — |
| Carbohydrates | 48.9 g | — |
| Fibre | 4.1 g | — |
Key micronutrients
| Nutrient | Amount per 100 g | % RDA per 100 g |
|---|---|---|
| Iron | 2.8 mg | 15.3% |
| Zinc | 1.1 mg | 10% |
| Magnesium | 51 mg | 12.1% |
| Selenium | 28.7 µg | 52.2% |
| Calcium | 20 mg | 2% |
| Potassium | 165 mg | 4.9% |
| Choline | 9.8 mg | 1.8% |
| Folate | 76 µg | 19% |
| Vitamin B12 | 0 µg | 0% |
| Vitamin B6 | 0.1 mg | 8.6% |
Substances
Substances in this food: editorial (Overview / literature) plus analytical (nutrition table).
9 substances in this food
Iron
Oxygen transport; dopamine synthesis (tyrosine hydroxylase cofactor)
Magnesium
Enzymatic cofactor (>300 reactions); neurotransmitters; mitochondria; redox balance
Zinc
Cofactor in neurotransmission and antioxidant enzymes; dopamine modulation
Selenium
Antioxidant enzyme cofactor (GPx); supports redox balance
Calcium
Bone health; neurotransmission; interacts with vitamin D and K2
Potassium
Electrolyte for nerve transmission, muscle function, and blood pressure regulation
Choline
Acetylcholine precursor; methyl donor; phospholipid synthesis for membranes
Vitamin B9 (Folate; 5-MTHF)
One-carbon metabolism; methylation; homocysteine recycling
Vitamin B6 (Pyridoxine → PLP)
PLP cofactor for neurotransmitter synthesis; relies on brain PDXK activation
References
[1] Report recommending the Digestible Indispensable Amino Acid Score (DIAAS) as the preferred method for evaluating dietary protein quality, replacing PDCAAS, and detailing methodology and implications for human nutrition. FAO 2013. Protein quality evaluation framework (DIAAS)
[2] Wheat, especially in less-refined forms, provides complex carbohydrates, fibre, and minerals such as magnesium, iron, and zinc. Mariotti & Gardner 2019. Plant-protein adequacy, limiting amino acids, and practical complementarity