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.
CARDIOVASCULAR EFFECTS, BLOOD PRESSURE, AND KIDNEY DISEASE. There is some evidence that caffeine can cause momentary increases in the blood pressure (up to 10 mm Hg), especially in people who are not habitual coffee drinkers. However, this effect is enhanced in the elderly, and people who have underlying hypertension.