Sweet potato vs White potato

They're both energy rich tubers that are tasty and delicious but which is nutritionally superior?

School Of Nutrition Posted Sep 28, 2015 Future Fit Training


Sweet potato vs White potato

Sweet potato and white potatoes are actually completely unrelated botanically speaking. White potatoes are part of the Nightshade family whereas sweet potatoes belong to the ‘Morning Glory’ family of flowering plants.

Calorific Value

Sweet potatoes are around one third lower in calories and carbohydrates than regular white potatoes, which may be good for some, but they're also lower in fibre and protein which is not so advantageous.

GI Index

Sweet potatoes generally score lower on the GI index but this varies with cooking method and whether the skin is consumed. Eating either type boiled, complete with the skin is the best option GI wise.

Micronutrients

In terms of micronutrients they both supply B vitamins, magnesium and potassium but it's here that orange flesh sweet potatoes really take the lead with around 8000 times the amount of beta carotene, a form of vitamin A that's an antioxidant that may help to regulate the immune system and control inflammation. As with other colourful fruit and vegetables sweet potatoes with purple skin or orange flesh are also higher in beneficial phytonutrients.

The winner: Sweet Potato

Both regular white potato and sweet potato can feature as part of a healthy balanced diet but think about preparation and cooking methods and of course what you serve with your potatoes to really maximise the nutritional benefits.