Here is a chart I made comparing 300 calories of white potatoes versus 300 calories of sweet potatoes:
They are equally nutritious. White potatoes are a nightshade and sweet potatoes are not, so people sensitive to nightshades may want to stay away. Also, there are mild toxins in the skins, so you're technically best off peeling your white potatoes. I leave the skins on because I think they are delicious and the toxin load is low. However, I only leave the skins on if the potatoes are fresh, smooth and unblemished. If the white potatoes have "eyes" - lumps/growths on the skin - those need to be taken off. That's where the big toxin load will come - if the potatoes are sprouting eyes.
Right click on the image and click VIEW IMAGE to see higher resolution. As you can see, white potatoes and sweet potatoes are equally nutritious. Enjoy both. They are both real, nutritious foods.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.