Coffee may cause headaches and dehydration.
If you're a coffee addict, your habit may cause some unwanted side effects, such as restlessness, indigestion and headaches. You're not alone in your coffee habit. According to the National Coffee Association, 54 percent of American adults drink coffee everyday and consume an average of 27 ounces of coffee per day, which is approximately three-and-a-half cups. Learning the signs of symptoms of drinking too much coffee can help prevent you from overdoing it in the future.
The common and most obvious sign you've ingested too much coffee is a restless feeling. According to MayoClinic.com, an 8-ounce cup of generic brewed coffee contains 95 to 200 milligrams of caffeine, depending on the strength of the brew. Caffeine is a central nervous system stimulant, which may relieve fatigue and drowsiness. Unfortunately, ingesting too much caffeine can cause trouble relaxing, anxiety, muscle tremors, irritability, rapid heart beat, insomnia and nervousness. Most adults can tolerate 200 to 300 milligrams of caffeine per day, but caffeine sensitivity varies among people. If you're extremely sensitive to caffeine, you may experience these restless feelings from only a small amount.
If you begin to experience digestive side-effects, you may have had too much coffee. Nausea and vomiting can both occur from excess caffeine consumption. According to a study published in the "Scandinavian Journal of Gastroenterology," coffee may cause gastroesophogeal reflux and gallbladder contraction and speed the movement of food through the colon. These effects can make diarrhea and gallstones worse and increase heart burn. If you're having any problems with your digestive system, consider cutting back on the coffee for relief.
Migraines and other headaches after your consumption of caffeine from coffee can be a sign you've overdone it. The Cleveland Clinic notes that caffeine can both trigger and help treat migraine headaches. Blood vessels become used to a certain level of caffeine consumption. If you suddenly drink more or less coffee, you might get a headache. If you're hoping to cut your coffee consumption, try gradually decreasing your intake over a period of weeks to prevent unpleasant headaches.
Caffeine in coffee acts a diuretic, which causes you to urinate more frequently. This loss of extra fluid can cause dehydration, especially if you're drinking coffee in place of caffeine-free beverages. Signs and symptoms you've had too much caffeine and are now dehydrated as a result include feeling light-headed, nauseous, weak or confused and experiencing dry mouth, lack of sweat and heart palpitations. If you're experiencing any of these side effects, consume caffeine-free fluids, such as water or herbal tea. Electrolytes and water in sports drinks, coconut water and other foods help to relieve dehydration as well.