Nutritional yeast is a deactivated form of Saccharomyces cerevisiae, widely valued as a plant-based source of complete protein, B vitamins, and trace minerals. Research suggests that the beta-glucans naturally present in nutritional yeast may support immune function and help maintain healthy cholesterol levels, while its rich B-vitamin profile — particularly when fortified with B12 — has been studied for its role in supporting energy metabolism and reducing fatigue. Studies also indicate that the combination of B vitamins, zinc, and antioxidants found in nutritional yeast may contribute to skin health and overall nutritional support, making it a popular dietary addition for individuals following vegetarian or vegan lifestyles. Available primarily as flakes or in fortified forms, it offers a savory, cheese-like flavor that integrates easily into everyday meals.
Compare this supplementResearch suggests that the evidence linking nutritional yeast to energy or fatigue relief is limited and mixed. One r...
View studies →The available studies linked to this topic do not provide direct, specific evidence regarding nutritional yeast and i...
View studies →Research suggests that nutritional yeast, as a source of B vitamins, protein, beta-glucans, and other micronutrients,...
View studies →The available research linked to nutritional yeast and skin health does not directly investigate this connection. The...
View studies →Research on nutritional yeast and cholesterol management is extremely limited in the available evidence base, and the...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Powder | 10–15 g | Daily | cholesterol management | Used in trials examining beta-glucan-rich yeast fiber for LDL reduction |
| Powder | 15–30 g | Daily | energy and fatigue reduction | Based on studies using B-vitamin-rich nutritional yeast for energy metabolism support |
| Powder | 15–30 g | Daily | nutritional support, protein and B-vitamin intake | Common in clinical and dietary studies involving whole nutritional yeast supplementation |
| Tablet | 2–6 g | Daily | immune function, beta-glucan activity | Based on RCTs examining beta-1,3/1,6-glucan content in nutritional yeast for immune modulation |
| Tablet | 1–3 g | Daily | skin health, B-vitamin deficiency | Historically referenced in dermatology literature for B-complex content |