Leaf spot first appears in rainy or humid weather as the plants are growing. They look like small brown spots with a water-soaked margin surrounded by a yellow halo usually on the upper halves of the iris leaves.
Two, caffeine enhances the sensation and contractility of the bladder. Another way caffeine can affect prostate health is through its ability to irritate the bladder because it is a theoxanthine, a family of drugs that includes theobromine (found in chocolate) and theophylline (found in tea). Theophylline also stimulates and irritates the bladder.
For some time there has been a belief that drinking coffee and tea can make you dehydrated because the caffeine they contain has a diuretic effect. (A diuretic is a substance that causes your body to produce urine, and it has been suggested caffeine can do this because it increases blood flow through the kidneys.).or some time there has been a belief that drinking coffee and tea can make you dehydrated because the caffeine they contain has a diuretic effect. (A diuretic is a substance that causes your body to produce urine, and it has been suggested caffeine can do this because it increases blood flow through the kidneys.).