The skin of carrots is rich in vitamins, minerals, and fiber. Scrubbing them well instead of peeling can retain these nutrients.
Potato skins are a good source of fiber and potassium. Eating them with the skin on maximizes their nutritional content, especially the skin itself is where much of the nutrients are concentrated.
Cucumber skins contain fiber and vitamin K. They are also low in calories, making the skin beneficial for those looking to maintain a healthy diet.
The purple skin of eggplants contains antioxidants, specifically nasunin, which has been linked to brain health. The skin can be tough, so cooking it properly is key to making it palatable.
The skin of zucchini contains the nutrient beta-carotene, as well as antioxidants. The skin is soft and easily digestible when cooked.
Beet skins are packed with nutrients and are especially high in fiber. Cooking them with the skin on helps to retain vitamins and minerals that might otherwise be lost.
Much like regular potatoes, the skin of sweet potatoes is rich in fiber and potassium. The skin also contains a good amount of beta-carotene, which the body converts into vitamin A.
Although not a vegetable, it's worth noting that apple skins are very nutritious. They contain fiber and vitamin C. While commonly eaten raw and unpeeled, they are mentioned here because the benefits of their skin are significant.