Assertion: drink's ounce | /r/HasProperty | consumed by healthy individuals
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text: A 2019 systematic review confirmed the numerous health risks, but said "kombucha is not considered harmful if about 4 US fluid ounces (120 ml) per day is consumed by healthy individuals; potential risks are associated with a low pH brew leaching heavy metals from containers, excessive consumption of highly acidic kombucha, or consumption by individuals with pre-existing health conditions.