What are the negative effects, if any, of long-term caffeine consumption?

What are the negative effects, if any, of long-term caffeine consumption?

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  1. What are the negative effects, if any, of long-term caffeine consumption?

    Coffee (caffeine) is reasonably well tolerated by the body when we compare it to all the other junk we put into ourselves. There are a few minor health issues to look at none of them very serious.
    Caffeine is a diuretic which is a fancy word for any substance that promotes the production of urine. So the more caffeine you drink the more you pee. Also because of this you actually need more water than normal to stay hydrated. Mostly a trivial issue if you have healthy kidneys. As you build tolerance to caffeine you also build tolerance to the diuretic effects.
    Caffeine is addictive. Although it is a stimulant the effects tend to taper off as the body builds a tolerance to the chemicals. This means you need more caffeine to get the same stimulant and wakefulness effects. You can reset this tolerance a bit by detoxing from caffeine and avoiding all caffeine for a few weeks. After your detox of 1-3 weeks the caffeine will be more effective at a lower consumption. Any tolerance you had built up will eventually return again and fairly rapidly too.
    Caffeine is a vasoconstrictor. This causes blood pressure to rise slightly. Generally safe in healthy adults.
    Caffeine increases your athletic ability and metabolic rate but also reduces coordination. Both effects are minor (though statistically measurable) and tend to mostly cancel each other out.
    Consumption of 1000–1500 mg per day is associated with a condition known as caffeinism. Caffeinism usually combines caffeine dependency with a wide range of unpleasant physical and mental conditions including nervousness, irritability, restlessness, insomnia, headaches, and heart palpitations after caffeine use.
    Coffee consumption is associated with a lower overall risk of cancer.
    Caffeine can disrupt your sleep. The DSM-IV defines a person with caffeine-induced sleep disorder as an individual who regularly ingests high doses of caffeine sufficient to induce a significant disturbance in his or her sleep, sufficiently severe to warrant clinical attention.
    Withdrawal symptoms – including headaches, irritab…

  2. Peace be on you.
    4 cups, caffeine in it, speed up messages between body and brain
    useful= non-commercial Alcohol and Drug Foundation

  3. While rare, there are a couple of clinical diagnoses related to caffeine consumption over the long term: caffeine induced psychosis being the most severe, as well as caffeine-induced sleep disorder and caffeine-induced anxiety. These types of disorders require a lot of caffeine, consumed regularly in a manner consistent with abuse.

  4. Most of the negative effects of caffeine come not from long-term consumption, but dramatic overdose, or long-term high usage.
    One indisputable side effect of caffeine is its ability to increase the production of stomach acid, which can lead to peptic ulcers, erosive esophagitis and gastroesophagael reflux disease (I hate typing these specific medical names… they’re so hard to spell).
    Other effects of long-term high usage–or abuse–are the common “coffee jitters,” nervousness, irritability, anxiety, heart palpitations, insomnia, etc. It’s a rather long and unpleasant list, but keep in mind that it results from overuse, not sustained use.
    Another effect of caffeine is its ability to relax the anal sphincter. While I suppose this could theoretically be a welcome occurrence from time to time, people suffering from incontinence are usually warned to keep away from caffeinated products.
    Here’s a link to the full wiki article on caffeine, which contains more about the possible consequences, including caffeine intoxication. Beer is, apparently, so yesterday.

  5. Caffeine is POSSIBLY UNSAFE when taken by mouth for a long time or in high doses (>400 mg per day). Caffeine can cause insomnia, nervousness and restlessness, stomach irritation, nausea and vomiting, increased heart rate and respiration, and other side effects.

  6. Studies show both positive and negative effects for long-term caffeine consumption. One possible negative that I’m interested in is the effect on sleep, dreaming and memory consolidation.
    If caffeine affects dreaming (leading to fewer / less vivid dreams) and dreaming has a function for memory consilidation, then the long-term use of caffeine might have some of the same effects as sleep-deprivation.
    As far as I know it hasn’t been studied sufficiently to reach some consensus – but that’s also true of sleep and dreams generally.
    See also:

    Why do I have deep sleep and more vivid dreams when I quit caffeine?


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