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Thread: Caffine Question

  1. #1 Caffine Question 
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    Why does caffine seem to affect different people in different ways? (Some people can get the jitters while others don't. Some people seem to get a rush quicker than others). I also heard that caffine serves the purpose of repeling insects from the plants that contain the chemical. Once the bean is processed those the caffine still repel insects?


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  3. #2  
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    Insects dislike the bitter taste of caffeine, fruit flies in which the taste receptor for detecting caffeine is knocked out aren’t repellent from the beans anymore.

    Caffeine blocks the receptors for the neurotransmitter adenosine, masking its effect and resulting in increased activity of dopamine, hence the stimulating effect of caffeine.
    Expression of receptors differs among persons and is changed over time (constant high dosages of dopamine will result lesser receptors (in the neurons) sensing dopamine, resulting in a weaker result of the neurotransmitter. This effect causes the addiction, without the caffeine the normal amount of dopamine is felt like to low amount, because the body is used to excess of dopamine. And this makes some people not used to caffeine sensitive to one Italian espresso while others need 5 to wake up.


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  4. #3  
    God
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    Did everyone know that caffeine has as many antioxidants as most teas? It is entirely health for you, straight up.
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  5. #4  
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    When I was a kid Eggs and milk were 'healthy' then they weren't then they were.....

    Just about every food I have ever eaten has been 'good' at some point or another and almost 'toxic' at others, I reckon (at 70) I ain't doing bad!

    I do know that if I avoided everything that I am told (or have been told) is bad for me(or was bad for me), I'd have to survive on distilled water.

    "Everthing in moderation, nothing in excess" is my rule except for forums,
    where it gets reversed... :wink:
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  6. #5  
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    Quote Originally Posted by Him
    Insects dislike the bitter taste of caffeine, fruit flies in which the taste receptor for detecting caffeine is knocked out aren’t repellent from the beans anymore.

    Caffeine blocks the receptors for the neurotransmitter adenosine, masking its effect and resulting in increased activity of dopamine, hence the stimulating effect of caffeine.
    Expression of receptors differs among persons and is changed over time (constant high dosages of dopamine will result lesser receptors (in the neurons) sensing dopamine, resulting in a weaker result of the neurotransmitter. This effect causes the addiction, without the caffeine the normal amount of dopamine is felt like to low amount, because the body is used to excess of dopamine. And this makes some people not used to caffeine sensitive to one Italian espresso while others need 5 to wake up.
    Can a person's body be permanently damaged from too much caffeine? Will that person always have a diminished reaction to dopamine no matter how long he/she has stopped getting caffeine in to their system?
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  7. #6  
    Cooking Something Good MacGyver1968's Avatar
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    Quote Originally Posted by billco
    ...Everthing in moderation....
    Except for heroin and ricin suppositories.

    I couldn't live without my caffiene...I don't see how people drink de-caf coffee..It's just useless brown water. :wink:
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    Quote Originally Posted by billco
    When I was a kid Eggs and milk were 'healthy' then they weren't then they were.....

    Just about every food I have ever eaten has been 'good' at some point or another and almost 'toxic' at others, I reckon (at 70) I ain't doing bad!
    Agreed. From my experiance it is generally best to ignore the news when it comes to nutrition. If it is so important that everyone should know than you will hear it from someone. Otherwise it is best to just see what works for you. My advice would be to not have caffeine to often and definitely not depend on it but, that is only my opinion.

    Quote Originally Posted by God
    Did everyone know that caffeine has as many antioxidants as most teas? It is entirely health for you, straight up
    I was not aware of this.



    Can you pont out the antioxidants for me?:P

    Most teas have caffeine by the way. When refering to the tea plant, green tea (the least fermented) has more antioxidants and less caffeine while black tea (most fermented) has less antioxidants and more caffiene. There is also an in between one but I forgot what it is called. Everything has it's ups and downs, it's just a matter of how you use it.

    I do not know the biochemistry of caffeine to well but I would say that any addiction is reversable but, you will be more susceptible to gaining it back later.

    P.S. God, what is the meaning of life?
    Do not try and bend the spoon. That's impossible. Instead... only realize the truth. There is no spoon. Then you'll see that it is not the spoon that bends, it is only yourself. -Spoon Boy
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  9. #8  
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    Quote Originally Posted by cambece
    Can a person's body be permanently damaged from too much caffeine? Will that person always have a diminished reaction to dopamine no matter how long he/she has stopped getting caffeine in to their system?
    To my knowledge these effects are not permanent; sensitization and desensitization are natural processes and go back to their individual expression level over time. Maybe someone can correct me but I think the cold turkey period is in parallel with the normalization of receptor expression.
    This being said I; I do not know if caffeine itself has any toxic action or damaging over a larger amount of time; I think this will give many contradicting arguments if you google it up. As you even can see in the discussion here, healthy or not…
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  10. #9  
    Cooking Something Good MacGyver1968's Avatar
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    Why do you get headaches when you stop drinking caffiene?
    Fixin' shit that ain't broke.
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