Does weight loss help with skin-related issues, like skin tags and dark circles around the eyes? How so? The skin is commonly affected by overweight. Skin elasticity and color are known to be altered from stress, lack of sleep, poor diet, allergies and various diseases. Iron anemia may result in pale skin; diets high in carbohydrates and sugar can cause skin palor and skin tags. Darkness around the eyes can be a sign of iron anemia, protein anemia, adrenal fatigue, diabetes or stress from a variety of sources.