Foods - Nutritional Yeast Flakes - Contraindications / Precautions / Warnings

Do not take brewer's yeast if you have candidiasis.

If you are allergic to molds, use brewer's yeast with caution and only under the supervision of your naturopath or other health practitioner.

Due to high amounts of phosphorus in brewer's yeast, people with osteoporosis should avoid this food. High levels of phosphorus in the body may leech calcium from bones as your body attempts to maintain a 2:1 ratio of calcium to phosphorus.