Good news for coffee lovers worried that their daily java may leave them dehydrated: a few cups of joe count the same toward a person’s fluid needs as an equal amount of water.
Researchers enrolled 50 men, all moderate coffee drinkers, and randomly assigned them to drink 4 cups of black coffee or the same amount of water daily for 3 consecutive days. After a 10-day “washout” period, coffee drinkers changed to water and vice versa. The investigators analyzed hydration status with several established measures and found that the hydration effects of coffee or water didn’t differ significantly.
From JAMA’s Daily News Site. JAMA. 2014;311(12):1190. doi:10.1001/jama.2014.2887