That's a little more than the typical 125 milligrams found in a cup of coffee. About 13 percent of the men reported leaky bladder, but only 4.5 percent had a problem considered moderate or severe - which is more than a few drops of urine leakage during the course of a month.
Irritability can be the result of a wide variety of other conditions, diseases or disorders that directly or indirectly affect the functioning of the brain and nervous system. These include intellectual decline, hypoxia and chronic pain. For more details about causes, see causes of irritability.
Lightheadedness has many causes, including: 1  Allergies. 2  Illnesses such as the flu or colds. 3  Vomiting, diarrhea, fevers, and other illnesses that cause dehydration.  Very deep or rapid breathing 1  (hyperventilation). Anxiety and stress.  The use of tobacco, alcohol, or illegal drugs.