Chlorella can potentially prevent cancer, increase white blood cell count, treat skin rash, treat constipation and detox the body, according to WebMD. It may also slow down the aging process and enhance digestion by increasing good intestinal bacteria. However, no sufficient evidence exists to support these chlorella benefits.
Chlorella is a fresh-water algae that is used in making medications and nutritional supplements, notes WebMD. Its nutritional content may vary depending on factors such as the mode of cultivation and harvest and the processing method. Chlorella can cause side effects such as nausea, flatulence, diarrhea and stomach cramps. People who are allergic to mold should avoid cholorella.