Frequent Urination and Urgency

Due to the stimulatory effects of caffeine on the bladder, increased urination is a frequent side effect of high caffeine intake. If you consume more coffee or tea than normal, you can find that you have frequent urination.

Most studies examining how the substance affects urine frequency have concentrated on older people and those who have incontinence or overactive bladders. In one study, urinary frequency and urgency significantly increased in 12 young to middle-aged adults with overactive bladders who consumed 2 mg of caffeine per pound (4.5 mg per kilogram) of body weight daily. This would be equivalent to roughly 300 mg of caffeine per day for someone weighing 150 pounds (68 kg). In addition, even in those with healthy bladders, increased consumption may raise the risk of developing incontinence.