An asparagine deficiency could be a contributing cause of fatigue and immune system stress including autoimmune disorders, infections and severe allergies.

Dietary sources richest in asparagine (per serving) include nutritional supplements, protein powders (especially soy) and all foods that are rich in protein, particularly milk protein (eggs, dairy products), whole grains and grain products, and meats, including fish.

Asparagine is partially degraded into aspartate by heat (cooking), storage or acid.