Blood sugar balance

Diets low in biotin impair the production of insulin, a key hormone in the balancing of blood sugar. More recently, researchers have shown that deficiency of biotin also affects the way insulin acts on cells, giving a second reason that low biotin intake potentially creates problems.
Skin health
Deficiency of biotin is also known to cause skin rash. This symptom occurs because biotin is necessary to build healthy fats in the skin. These fats keep the skin supple and moist, and when they are gone, the skin becomes flaky and irritated

 Peanuts
 Almonds
 Sweet Potato
 Eggs
 Onions
 Oats
 Tomatoes
 Carrots
 Walnuts
 Salmon