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Definition of Yeast syndrome

Medically reviewed by Min Clinic Staff | Updated: January 2026

Yeast syndrome: The yeast Candida has been thought to cause a syndrome with a number of nonspecific problems including fatigue, loss of appetite, headache, short-attention span, depression and all manner of intestinal irregularities. There is no scientific evidence to support the existence of the yeast syndrome (also called the yeast connection).