White/Button Mushroom

Overview

White/button mushroom (Agaricus bisporus) is the BRAIN Diet’s canonical generic entry for this species. The same fungus is sold under several market names that reflect maturity and cap colour, not a different species:

White / Button Mushroom
        ↓
Cremini Mushroom
        ↓
Chestnut Mushroom (UK)
        ↓
Portobello Mushroom

Use this page when a recipe, shopping list, or matrix entry says “mushrooms” without a species qualifier and you mean the common cultivated table mushroom—not shiitake, oyster, maitake, or other species (each has its own food page).

Nutritionally, A. bisporus is a low-calorie food with useful niacin (vitamin B3) for NAD⁺ synthesis and mitochondrial support. UV-exposed white/button mushrooms can provide vitamin D₂ (ergocalciferol); ordinary supermarket specimens are often low in vitamin D unless labelled or treated for UV exposure Starck et al. 2024.

Food Context

Market names and maturity

• White / button — youngest, closed cap; mildest flavour; typical for salads and quick sautéing.
• Cremini — immature brown-capped stage; firmer texture and deeper flavour than white buttons.
• Chestnut (UK) — regional name for the same brown-capped immature stage as cremini.
• Portobello — mature, fully opened cap; larger and meatier; often grilled or stuffed.

Macro- and micronutrient values shift slightly with maturity and water content, but for diet planning they are treated as one species with this page as the reference.

Synergies

• Include in diverse plant food rotation; dietary diversity (≥30 plant foods per week) supports microbial richness and resilience
• Pair with other mushroom species (shiitake, oyster, maitake, etc.) when the goal is breadth of fungal polysaccharides and culinary variety—not as substitutes for A. bisporus

Preparation

• Vitamin D: choose UV-exposed or UV-treated mushrooms when vitamin D intake from food is a priority; cooking and storage of UV-treated mushrooms retain much of the vitamin D₂ formed Starck et al. 2024
• Cooking can improve digestibility and palatability; avoid charring at very high heat
• Portobello caps are often used as a plant-forward swap for burger buns or meaty centre-of-plate portions

Recipes

1 recipe containing this food

Savoury Greens & Egg Breakfast Skillet

A warm savoury breakfast skillet with eggs, greens, and slow carbohydrates for steady morning energy.

Nutrient Tables (per 100 g)

Core nutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Energy	22 kcal	—
Protein	3.1 g	—
Total fat	0.3 g	—
Carbohydrates	3.3 g	—
Fibre	1 g	—

Key micronutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Iron	0.5 mg	2.8%
Zinc	0.5 mg	4.7%
Magnesium	9 mg	2.1%
Selenium	9.3 µg	16.9%
Calcium	3 mg	0.3%
Potassium	318 mg	9.4%
Folate	17 µg	4.3%
Vitamin B6	0.1 mg	6.1%

Reference intakes: US Dietary Reference Intakes for adults (19–50 years; using the higher of male/female values where they differ).

Data provenance (core / micronutrient panel): USDA FoodData Central, Mushrooms, white, raw, FDC ID 169251, API, per 100 g edible portion, last checked 2026-06-01

Substances

Substances in this food: editorial (Overview / literature) plus analytical (nutrition table).

10 substances in this food

Se^2-

Selenium

Antioxidant enzyme cofactor (GPx); supports redox balance

Vitamin B3 (Niacin; Niacinamide)

NAD+ precursor; supports mitochondrial biogenesis and ATP production

Vitamin D

Neurotrophic and immune modulation; calcium homeostasis

Fe²⁺

Iron

Oxygen transport; dopamine synthesis (tyrosine hydroxylase cofactor)

Zn²⁺

Zinc

Cofactor in neurotransmission and antioxidant enzymes; dopamine modulation

Mg²⁺

Magnesium

Enzymatic cofactor (>300 reactions); neurotransmitters; mitochondria; redox balance

Ca²⁺

Calcium

Bone health; neurotransmission; interacts with vitamin D and K2

K⁺

Potassium

Electrolyte for nerve transmission, muscle function, and blood pressure regulation

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

• UV-exposed mushrooms as a source of vitamin D Starck et al. 2024
• Niacin-rich foods (e.g., salmon, chicken breast, turkey, peanuts, and mushrooms) support NAD+ availability, glutathione synthesis, and mitochondrial health
• Niacin (Vitamin B₃): Directly converted to NAD+ via salvage pathway; food sources include chicken, turkey, tuna, salmon, mushrooms, peanuts, whole grains Pirinen et al. 2020
• Targets foods providing essential brain supporting vitamins: D (UV-exposed mushrooms; fortified plant milks/yogurts)
• UV-grown mushrooms mentioned as functional food innovation