A 38-year-old member asked:
help please! is drinking a gallon of water a day bad?
1 doctor answer
Dr. John Chiu answered
56 years experience Allergy and Immunology
Probably OK: A gallon a day is probably more than what you need if you are not exercising vigorously or sweating a lot. However if you are feeling well otherwise, there is no harm done. Be sure that you don't have any health conditions which may cause you to have excessive thirst (diabetes is just one example) and urination.
Answered on Sep 29, 2016
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