Headaches
Headaches can have several causes. Many people think that the major cause of headache is nervous tension, but there is strong evidence that suggests diet and environment as possible factors. Some people get headaches because they are dependent on caffeine. Other people may be allergic to salt, or they may have low blood sugar. Still other people are allergic to household chemicals including polishes, waxes, bug killers, and paint. If they can manage to avoid these substances, their headaches tend to go away. When a person has recurring headaches, it is worthwhile to look for the underlying cause, especially if the result of that search is freedom from pain.