Vegetable · Root Vegetable

Sweet Potato

Health
ScoreA

Sweet potato is a starchy root vegetable exceptionally rich in beta-carotene (provitamin A) and fiber, providing sustained energy with a low glycemic impact when boiled.

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Why Sweet Potato scores 87

Nutrient density33

Protein quality6

Fiber content8

Healthy fats5

Bioactive compounds13

Glycemic impact10

Top nutrients

% Daily Value per ½ cup (85 g)

Vitamin B6 44%Vitamin C 19%Manganese 18%Copper 15%Pantothenic Acid 14%

Nutrition

per_100g

Calories

Protein

20.7g

Carbs

0.2g

Fat

3.3g

Fiber

Health benefits

Reduced cardiovascular disease and mortality risk

strong evidence

High beta-carotene and other carotenoids reduce oxidative stress and endothelial dysfunction, while potassium (475mg/100g) supports healthy blood pressure regulation

Improved glycemic control and reduced type 2 diabetes risk

moderate evidence

Soluble fiber (pectin) slows glucose absorption, and compounds like chlorogenic acid improve insulin sensitivity

Enhanced gut microbiota diversity and colonic health

moderate evidence

Resistant starch formed in cooled sweet potato acts as prebiotic, selectively feeding beneficial Faecalibacterium prausnitzii and Roseburia species

Reduced age-related cognitive decline

moderate evidence

Carotenoids and choline (13.1mg/100g) support neuronal membrane integrity and reduce neuroinflammation linked to Alzheimer's pathology

Support for bone health and mineral absorption

moderate evidence

Manganese content activates osteoblasts (bone-forming cells) and supports collagen synthesis; moderate potassium aids mineral retention

Pairs well with

·Pair with olive oil or avocado because fat-soluble carotenoids (beta-carotene, lutein) require dietary lipids for optimal intestinal absorption and bioavailability
·Combine with leafy greens (spinach, kale) because the vitamin K in greens complements sweet potato's potassium and fiber for enhanced cardiovascular and bone support
·Eat with black beans or lentils because plant-based proteins increase amino acid completeness while legume polyphenols synergize with sweet potato carotenoids for anti-inflammatory effects
·Pair with fermented foods (sauerkraut, kimchi) because cooled sweet potato's resistant starch feeds probiotic populations from fermented foods, amplifying microbiota benefits

Practical tips

·Best timing: Sweet potato's balanced carbohydrate-to-fiber ratio (3:1 carbs:fiber) provides sustained energy appropriate for any meal. For glycemic control, pairing with protein and fat is more important than timing; however, including cooled sweet potato with lunch or dinner optimizes resistant starch benefits as the microbiota peaks in activity in late afternoon/evening.
·Cool cooked sweet potato to room temperature or refrigerate for 12+ hours to maximize resistant starch formation, which provides prebiotic effects and lowers glycemic impact
·Choose orange-fleshed varieties for highest beta-carotene content (up to 1000+ μg/100g), or purple varieties for additional anthocyanins; store in a cool, dark place (not refrigerated) for 2-3 weeks
·Boil instead of bake to better preserve heat-sensitive vitamin C and reduce acrylamide formation; aim for 15-20 minute boil to retain firmness
·Include skin in preparations when possible (after thorough washing), as the peel concentrates fiber and contains additional polyphenols
·Consume with adequate fat (1-2 tsp olive oil or 1/4 avocado) at same meal to maximize carotenoid absorption by up to 6-fold