Sweet Potatoes

Overview

Sweet potatoes are starchy roots that combine slow-digesting carbohydrate with meaningful fibre, potassium, and carotenoid density. Orange-fleshed varieties are especially relevant for beta-carotene, while also contributing vitamin C and vitamin B6 in whole-food form.

Within the BRAIN Diet framework, sweet potatoes are best used as a whole-food carbohydrate base that can be roasted, steamed, or cooled/reheated depending on meal context. Their nutrient profile differs from white potatoes primarily through carotenoid concentration and generally higher intrinsic sweetness, while still supporting fibre-first meal construction.

Recipes

Key Nutritional Highlights

Provides fibre and potassium in a low-fat root-vegetable matrix.
Orange-fleshed varieties add substantial beta-carotene contribution.
Works well as a slower carbohydrate base when paired with protein, fibre, and fats.
Sweetness and texture are strongly variety- and cooking-method dependent.

Food Context

Synergies

Pair with fat-containing foods (e.g. olive oil, yogurt, nuts/seeds) to support carotenoid absorption.

Preparation

Roasting and mashing improve palatability and can increase practical intake in mixed meals.
Cooling after cooking changes starch structure and may improve post-meal glucose response.

Essential Amino Acid Profile

Sweet potatoes are not a protein-forward food; use legumes, dairy, eggs, fish, or other protein-rich foods alongside.

Nutritional Table (per 100 g)

Core nutrition

Nutrient	Amount per 100 g	% RDA per 100 g
Energy	86 kcal	—
Protein	1.6 g	—
Total fat	0.1 g	—
Saturated fat	0 g	—
Carbohydrates	20.1 g	—
Sugars	4.2 g	—
Fibre	3 g	—

Key micronutrients

Nutrient	Amount per 100 g	% RDA per 100 g
Iron	0.6 mg	3.3%
Zinc	0.3 mg	2.7%
Magnesium	25 mg	6%
Selenium	0.6 µg	1.1%
Calcium	30 mg	3%
Potassium	337 mg	9.9%
Copper	0.2 mg	16.7%
Folate	11 µg	2.8%
Vitamin B6	0.2 mg	11.8%
Vitamin E	0.3 mg	2%

Bioactive compounds

Values below are often from specialist compositional databases or literature, not the standard USDA panel. Asterisks (*) refer to source notes at the bottom of this section.

Compound / class	Amount per 100 g	Notes
Beta-carotene	8500 µg *	Orange-fleshed varieties are typically richest in carotenoids.

Note: Bioactive-compound values vary substantially by cultivar, species, cocoa or oil percentage, processing, and brand formulation. Show quantitative values only where a defensible source exists; otherwise prefer qualitative presence statements or ranges in source notes.

Source notes (bioactive / supplementary):

* Beta-carotene: Typical USDA-reported beta-carotene order-of-magnitude for raw orange sweet potato; values vary by cultivar and storage.

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, Sweet potato, raw, API + manual curation, per 100 g edible portion, last checked 2026-03-23

Substances

References

[1] USDA FoodData Central compositional records for sweet potato (raw/cooked variants) USDA FoodData Central

Sweet Potatoes

Overview

Recipes

Black Bean & Sweet Potato Vegetable Chilli

Creamed Corn on Roasted Sweet Potato

Key Nutritional Highlights