It’s fine to drink coffee every day. Daily intake of coffee improves tolerance to the diuretic effects of caffeine. Coffee is also rich in other health-promoting compounds like antioxidants and phytochemicals, and regular consumption may enhance health and longevity. It’s fine to drink coffee every day. Daily intake of coffee improves tolerance to the diuretic effects of caffeine. Coffee is also rich in other health-promoting compounds like antioxidants and phytochemicals, and regular consumption may enhance health and longevity.