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.
Here are just a few of the studies that support the notion that caffeinated coffee reduces risk of certain types of cancer. 1  Oral Cancer: More than 4 cups of coffee a day decrease oral and head cancers by 39%. 2  Uterine Cancer: Woman who drink more than two cups of coffee a day have less chance of uterine cancer.