Sweet Potatoes vs White Potatoes: Calories, Weight Loss & Diabetes

Nutritional Breakdown of Sweet Potatoes vs White Potatoes

Both sweet and white potatoes provide important nutrients and make healthy additions to any balanced diet. But when it comes to calories, how do they compare in a typical 4oz potato serving?

Calories in 4 Ounces of Sweet Potato

A medium-sized sweet potato, weighing around 4 ounces raw, contains about 100 calories.

This includes 0 grams of fat, 5 milligrams sodium, 23 grams carbs, 4 grams of fiber, 7 grams sugar, and 2 grams protein.

Calories in 4 Ounces of White Potato

A medium-sized Russet or white potato, weighing approximately 4 ounces raw, provides about 120 calories.

This consists of 0 grams fat, 10 milligrams sodium, 26 grams carbs, 2 grams fiber, 2 grams sugar, and 3 grams protein.

Comparing Vitamins and Minerals

When it comes to vitamins and minerals, sweet and white potatoes have similar nutrient profiles. Lets compare some of the key micronutrients in 4 ounce servings of each.

Vitamin A

Sweet potatoes are one of the best vegetable sources of antioxidant vitamin A. Just one 4 ounce sweet potato contains over 100% of the RDI for vitamin A.

White potatoes contain no vitamin A.

Vitamin C

A 4 ounce sweet potato offers about 25% the RDI for immune-supporting vitamin C. White potatoes contain an almost identical amount, making them both excellent sources.

Potassium

Known for its blood pressure lowering effects, potassium is abundant in both types of potato. A 4 ounce serving contains 15-20% the RDI, regardless if it's white or sweet.

Manganese

This essential trace mineral is more concentrated in sweet potatoes, providing about 15% the RDI. White potatoes contain closer to 5-6%.

Impact on Blood Sugar

An important consideration for many people is the impact on blood sugar levels. Let's see how sweet potatoes and white potatoes compare.

Glycemic Index

On the glycemic index scale of 1 to 100, boiled white potatoes rate moderately high at 78. Sweet potatoes rate lower at 63, but this can vary depending on the variety.

The glycemic index measures how quickly a food causes blood sugar to rise compared to pure glucose. The lower the GI, the more gradual the spike.

Glycemic Load

Glycemic load accounts for a food's carbohydrate content and glycemic index. Values under 10 are considered low GL.

Based on a 4 ounce serving, sweet potatoes rate at 9. White potatoes come in at 16, classified as a high glycemic load food.

Weight Loss

When it comes to calories and macronutrients, sweet and white potatoes are fairly equal. So which one is better for weight loss?

Satiety

Some research shows intrinsically higher protein and fiber in sweet potatoes can promote greater feelings of fullness and satisfaction. This gives them a slight advantage for weight management.

Energy Density

With lower energy density, meaning less calories per gram, sweet potatoes tend to be more filling. This results in eating smaller portions which aids weight loss.

Lower GI

The lower glycemic index of sweet potatoes causes a gradual rise and fall in blood sugar. This leads to more stable energy levels rather than peaks and crashes that can trigger hunger and overeating.

Managing Diabetes

For people with diabetes or insulin resistance, sweet potatoes tend to be the wisest choice over white potatoes most often.

More Stable Blood Sugar

The fiber and lower glycemic rating leads to a slower release of sugars into the bloodstream. This promotes better blood sugar stability.

Less Insulin Needed

With white potatoes causing a faster spike in blood glucose, more insulin is required to lower levels back down. Over time this can tax the pancreas and worsen insulin sensitivity.

Antioxidant Protection

The antioxidant vitamins C and A in sweet potatoes provide cellular protection from oxidative damage, which plays a role in developing diabetes complications.

The Verdict

While both make healthy additions to your diet, sweet potatoes tend to have a nutritional advantage over white potatoes for blood sugar regulation and weight management.

However, Russet or red potatoes still offer great nutritional value. The key is moderation and balancing all carbohydrate-rich foods as part of an overall healthy eating pattern.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional before starting any new treatment regimen.