Too much sodium, especially monosodium glutamate -- a flavor-enhancing salt -- can give some people headaches. In fact, you may be sensitive to this mineral. If you are, even just a little salt could have you reaching for the ibuprofen.
Sodium
Most medical professionals recommend keeping your sodium intake below 1,500 mg a day, according to the American Heart Association. This amount reduces your risk of developing high blood pressure or heart disease. But 1,500 mg may still be too much for you and cause a headache.
Time Frame
Most people with a sensitivity to sodium or monosodium glutamate typically experience a reaction within 30 minutes of eating foods high in this mineral. It takes roughly this amount of time for your nervous system to recognize the substance. The American Headache Society explains that it activates the processes that cause your headache.
The Process
Too much sodium stimulates nerve cells, which send impulses to your blood vessels. The impulses are believed to trigger the release of serotonin, which causes the blood vessels to constrict, as well as prostaglandins and other substances, which cause the vessels to dilate. The combination of these activities causes you to suffer head pain.
Diet
In addition to reducing your salt intake, avoid eating foods known to be high in sodium. This includes canned vegetables and meats, soups, frozen meals, meal helpers, deli meat, salty snacks and cheese. Some cereals and baked goods also contain excessive amounts of sodium. Refer to the Nutrition Facts on the packaging to determine sodium content. If you're dining out, ask your server if the dishes contain MSG.
Treatment
Sometimes it can be difficult to reduce or eliminate excess sodium from your diet. Most nonsteroidal anti-inflammatory drugs, such as ibuprofen, aspirin and acetaminophen can minimize pain. Triptans, ergotamine and other sedatives can ease a headache when pain is severe.
