Zinc is more than just a way to use a 'z' in scrabble -- it's an essential nutrient that your body needs, both to heal wounds and injuries and help your body break down carbohydrates. How do you know if you're getting enough? Here are some signs that you're not, according to Everyday Health:

• Wounds, lesions and infections are difficult to heal.
  
• Your appetite is decreased.
  
• You experience an abnormal sense of taste and smell.
  
• You have difficulty seeing in the dark
• You experience abnormal hair loss.
  

Think you might be low on zinc? Load up on protein sources like red meat, turkey, seafood and legumes, as well as veggies like spinach and peas. Whole wheat bread, yogurt and milk are also good sources.