Food 15 Foods You Can Eat and Not Gain Weight ADVERTISEMENT: 1.Zucchini Image source: Foodandstyle.com Zucchini, aka courgettes, are good sources of folate, potassium and vitamin A. These help with having healthy intestines and are low in kilocalories. 100 grams or 3.5 ounces is around 20 kilocalories. Page 15 of 15 Next