Your bodyweight also affects how much caffeine is safe - the heavier a person is, the more caffeine they can consume without negative effects.įor most healthy adults, an intake of 300-400 mg of caffeine a day is found to be safe in general, which is equivalent to four cups of brewed coffee. We metabolize caffeine at different rates so there’s no hard and fast rule on how much caffeine one can consume before experiencing withdrawal symptoms. How Caffeine Consumption Affects Headaches If you decide to drink caffeine, it is recommended that you increase your water consumption to compensate for its dehydration effects.Īlthough a “caffeine headache” is most commonly caused by withdrawal, it can also be triggered by excessive intake, medication overuse, caffeine sensitivity, allergic reaction, or a fluctuation of caffeine consumption from day to day. This increases the blood flow and can trigger a headache. When you stop the caffeine intake, the blood vessels in the brain dilate. When we drink coffee, or any caffeinated beverages (e.g., tea, energy drinks) the caffeine causes the blood vessels in the brain to constrict. In fact, caffeine withdrawal headaches are quite common among coffee drinkers if they don’t get their “fix.” There are many causes, affects, and tips to minimize your headache symptoms when it comes to caffeine. If you’re used to drinking coffee to start your day, you might have experienced a “caffeine headache” when you don’t get your morning cup of joe.
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