7 Nutrients Vegans May Be Missing From Their Diets

Why it's important: Needed to make hemoglobin, a substance in red blood cells that enables them to carry oxygen

Signs of a deficiency: Fatigue, headaches, pale skin, brittle nails, inability to focus, difficulty maintaining body temperature, decreased immune function, anemia (low levels of healthy red blood cells)

Recommended daily intake (RDI): 18 mg

Vegan sources:

• 1 cup rolled oats: 3.4 mg
• 1/2 cup lentils: 3.3 mg
• 1/4 cup pumpkin seeds: 5.2 mg
• 1 cup cooked quinoa: 2.8 mg
• 3/4 cup Wheat Chex: 13.5 mg
• 1 cup cooked barley: 2.1 mg