Good potato, bad potato… 🥔 🍠
The common perception is that white potatoes are somehow a ‘bad’ choice, whilst sweet potatoes are inherently ‘good’.
Sweet potatoes are good – they have a lower glycaemix index than white potatoes (though it’s not actually ‘low’) which means it has a lesser impact on blood sugar levels. It’s also a great source of vitamin A, C, B6 and Potassium and also fibre.
In contrast white potatoes have a higher glycaemic index, slightly less fibre and less vitamin A, but are also good sources of Vitamin C and B6. They aren’t ‘bad’ though.
Despite the higher glycaemic index it’s not the individual foods that matter in that context but rather the glycaemic index of the whole meal, so it will depend what you’re eating with the potatoes. Combined with other low GI foods, protein and fats, the overall GI of the meal will be lowered.
In addition they actually contain fewer calories than sweet potatoes. So from a fat/weight loss perspective you’d be marginally better off having white potatoes.
So if you’ve been tucking in to sweet potatoes thinking they’re better for weight loss then perhaps think again. In reality the difference is pretty small, and the calorie impact is fairly similar. So just have the potatoes you actually like the taste of!