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.
Nutritional Deficiencies. Caffeine inhibits the absorption of some nutrients and causes the urinary excretion of calcium, magnesium, potassium, iron and trace minerals, all essential elements necessary for good health. Male Health Problems. Coffee is an irritant to the urinary tract and bladder. It is also a diuretic that aggravates conditions associated with frequent urination. Eliminating coffee and caffeine often relieves symptoms associated with frequent urination due to enlarged prostate glands.