Potato Nutrition Facts and Health Benefits
A medium potato (150g, baked with skin) provides just 110 calories while delivering 26g of carbohydrates, 3g of protein, and 0g of fat. It is an excellent source of fiber (4.7g), vitamin C (27mg, 30% DV), potassium (620mg), and vitamin B6 (0.54mg, 25% DV).
Complete Nutritional Breakdown
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Calories | 110 kcal | — |
| Carbohydrates | 26 g | 9% |
| Fiber | 4.7 g | 17% |
| Protein | 3 g | 6% |
| Fat | 0 g | 0% |
| Vitamin C | 27 mg | 30% |
| Potassium | 620 mg | 18% |
| Vitamin B6 | 0.54 mg | 25% |
| Iron | 1.1 mg | 6% |
| Magnesium | 30 mg | 7% |
| Phosphorus | 75 mg | 6% |
| Niacin | 1.4 mg | 9% |
| Folate | 28 mcg | 7% |
| Cholesterol | 0 mg | 0% |
| Sodium | 10 mg | <1% |
Source: USDA FoodData Central.
Are Potatoes Healthy or Unhealthy?
Potatoes are one of the most nutrient-dense foods available. A single medium potato provides more potassium than a banana and 30% of your daily vitamin C needs. They are naturally fat-free, cholesterol-free, and gluten-free. However, preparation method matters enormously: a baked potato with skin is a health food, while deep-fried chips loaded with salt are not. The potato itself is not the problem — it's what we do to it.
Potato vs Rice vs Bread
Per 100 calories, potatoes deliver significantly more potassium, vitamin C, and fiber than white rice or white bread. Potatoes also have a lower calorie density (0.77 kcal/g vs 1.30 for rice and 2.65 for bread), meaning you can eat a larger, more satisfying portion for the same calories. The glycemic index (GI) of potatoes varies widely by variety and preparation: boiled waxy potatoes have a moderate GI around 56-69, while baked Russets score higher at 85+. Cooling cooked potatoes creates resistant starch, which lowers the GI and feeds beneficial gut bacteria.
Can Diabetics Eat Potatoes?
Yes, with smart preparation. Boiling potatoes (rather than baking or frying) lowers the glycemic index. Eating potatoes with protein, healthy fat, and additional fiber slows glucose absorption. Cooling cooked potatoes overnight creates resistant starch that significantly reduces the glycemic response. Waxy potato varieties (like Red Pontiac or fingerlings) generally have a lower GI than starchy varieties like Russet Burbank.
Are Green Potatoes Dangerous?
The green color in potatoes comes from chlorophyll, which is harmless. However, the same light exposure that causes greening also triggers production of solanine, a glycoalkaloid that can cause nausea and digestive issues at high concentrations. Simply cut away any green portions before cooking. To prevent greening, store potatoes in a cool, dark place away from direct light.