Although vinegar is acidic, the human body has a strong fluid buffering system, so as long as it is not consumed in excess, there is no need to worry that vinegar will disrupt the body's acid-base balance. There is also no evidence to suggest that osteoporosis patients cannot consume vinegar. Osteoporosis patients can consume vinegar normally as long as they do not have contraindications like gastrointestinal ulcers. Similarly, the external use of vinegar will not affect the body's acid-base balance, nor will it lead to osteoporosis. Vinegar, as a food or medicine, not only does not cause osteoporosis, but moderate amounts can also promote the absorption and utilization of calcium. This is because vinegar reacts chemically with calcium in food, forming calcium acetate, which is soluble in water and easily absorbed by the human body.