Your urinary system – made up of your kidneys, ureter, bladder and urethra – aids in the excretion of toxins from your body. A number of factors, including foods in your diet, can affect the amount you urinate each day. Drinking coconut milk might temporarily increase your urinary output in some cases, but likely won’t contribute to excessive urination unless you also have an underlying disorder.
The primary way drinking coconut milk affects your urination is by increasing your fluid intake. Although coconut milk contains a number of substances, including saturated fats, medium-chain triglycerides (MCT), vitamin, sugar and protein, it is primarily made up of water. If you consume large amounts of coconut milk, this increases your fluid intake and your body responds by removing fluid from your body via your urine. As a result, drinking coconut milk is a significant source of fluid might cause a temporary increase in urination due to increased fluid intake, but should not have long-term effects on urination in most cases.
If you suffer from undiagnosed or poorly controlled diabetes, consuming food, such as coconut milk, might affect your urination. Diabetes can cause excessive thirst dan urination in some cases, due to abnormally high blood sugar levels. (http://www.livestrong.com)Source: Cocommunity, Vol. XLII No. 1, 1 January 2012