Lesson 1: Nutritional Deficiencies

Nutritional Deficiencies

Zinc, Iron and B12

While being picky can sometimes lead to nutritional deficiencies, nutritional deficiencies can also lead to picky eating habits. The top three nutrients that can affect eating habits are zinc, iron and B12.


  • Is essential for the normal growth and development of the body. It is also a key ingredient in the production of digestive acids in the stomach. Low zinc in the body can lead to picky eating, among other symptoms. 
  • Deficiency can show up as white spots on the nails, slow recovery from common infections, slow healing of scrapes and bruises, low immunity, and problems with hair and nails. 
  • Is present in animal products, whole grains, and seafood. If your child is picky about these foods, consider a supplement to fulfill your child’s needs. 

Iron and b12:

  • These two nutrients are closely linked and often found in the same foods. A deficiency in one will often result in low levels of the other. Low levels of these nutrients will usually lead to fussy eating. 
  • Deficiency will often show up as dizziness, constant fatigue, low stamina or tiering quickly, and a pale appearance. 
  • Iron is found in red meats and green vegetables. Vitamin B12 is found in animal products, fish, and poultry products. If your child is picky about these foods, work with your practitioner to explore supplementation.