Excessive coffee consumption can affect bone health. Caffeine in coffee increases calcium excretion, and if calcium intake is insufficient or the body cannot effectively absorb calcium, it may lead to osteoporosis. Women need to be especially cautious about osteoporosis, as they lose bone density faster after menopause. To prevent osteoporosis, it is recommended to drink coffee in moderation, consume foods rich in calcium and vitamin D, and engage in regular exercise.