#1 Zinc-- This is the most common nutrient deficiency in the US.

Why is it important?
Supports wound healing, taste and smell, involved in many enzymatic processes, extremely important during growth and development in utero, helps prevent macular degeneration, important for prostate and uterine health, involved in proper DNA synthesis, boosts immune system

Deficiency symptoms
Age-related vision loss, diarrhea, loss of appetite,
impotence, retarded wound healing, taste and smell loss, hair loss, skin lesions, eye lesions, growth retardation, mental lethargy, decreased immune system

Found in...
Dairy products, fortified foods, oysters, nuts and beans, meat and chicken, seafood, whole grains
Recommended dose 25-30 mg/day