Caffeine is usually thought to be harmless, but there are some negative effects as well, and some people are a lot more susceptible to the effects of caffeine than others. If you have a heart condition or an anxiety disorder or certain other medical problems, you might be one of the people who needs to either eliminate caffeine from your diet or seriously reduce how much of it you ingest. Even for people without these problems, there can still be too much caffeine in their diet. It can make them shaky and jittery and it can also keep them from sleeping well at night. This is particularly dangerous because it can perpetuate a vicious cycle. The person gets too much caffeine, so he or she doesn’t sleep well. Because he or she hasn’t slept well and is tired, more caffeine is consumed in order to stay awake. It is easy to see how this could become a serious problem.

Eventually the person is basically living on caffeine and getting very little sleep, and there have been plenty of studies to show how bad that is for the body when a person is sleep deprived for a long period of time. Some people do not have problems that are this severe when it comes to their caffeine intake and how they react to it, but that doesn’t mean that they aren’t seeing any effects from it. A lot of people report feeling nervous and jittery because of their caffeine intake, and they may shake and have stomach problems, too. Caffeine can cause nausea and diarrhea and other gastrointestinal issues like cramping and bloating. When people start having these problems or start to get a lot of stomach pain, they generally don’t think of the caffeine that they are taking in. Mostly they just assume that it is something that they ate. Only when it continues to happen over a long period of time do they start to think that there might be other causes, but caffeine consumption is still generally not what comes to mind.

Two hundred to three hundred milligrams of caffeine each day is about all that an average-sized adult should get. Too much more than that, and the jitters and nausea can start. Withdrawing from caffeine can make you feel bad, as well, and a lot of people who just stop caffeine suddenly complain that they have headaches and that they are very tired. Their bodies have to go through the process of readjusting to the lack of stimulant chemicals in their bloodstream. This is usually accomplished best if they wean themselves off of caffeine instead of just stopping it entirely and it is also important that they get enough sleep and eat a healthy diet. This can make the transition to a lower level of caffeine or no caffeine much less painful. Not everyone will be well at this, though, and some people feel that they have to have their caffeine. In that case, just cutting back to a reasonable amount can make a lot of difference.

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