Which foods should be restricted in PKU?

• A. Meat, eggs, and dairy
• B. Fruits
• C. Grains
• D. Vegetables

Answer: (A)

In PKU, the body cannot properly metabolize phenylalanine, an amino acid found in most protein-containing foods. The main goal of the diet is to keep phenylalanine levels in check to prevent brain damage and developmental problems. Foods that are rich in phenylalanine, especially animal-derived proteins, should be restricted. Meat, eggs, and dairy are the prime examples of these high-phenylalanine foods, so they are limited or avoided in the PKU diet.

Fruits and vegetables are generally low in phenylalanine and can be included in certain amounts, and grains may be consumed in controlled portions depending on the plan. In many cases, people with PKU use a special phenylalanine-free medical formula to provide other essential amino acids.