This was a placebo controlled study
And chocolate is certainly not something that should form the mainstay of one's diet. And when we are addicted to stimulants like caffeine, we lose the sensitivity to our own natural stimulants (dopamine and adrenaline).But scientists have turned up some interesting facts on caffeine.. Whilst in some instances, and in China protective netting Suppliers excess, these can have negative effects on our body, they can also be quite beneficial. Coffee and tea contain a range of plant chemicals (phytonutrients) that could be responsible for this. This was a placebo controlled study, meaning that some people were not given any caffeine. It also encourages the release of another brain chemical, dopamine (as well as adrenaline). For example, caffeine actually blocks the effects of a neurotransmitter in the brain (adenosine) that otherwise makes us feel tired.nutraingredients. Another, earlier study (2004) found that caffeine did support short term memory, but only when it was in relation to a topic that people were already thinking about. Dopamine contributes to a feeling of well being. These parts of the brain were the frontal lobe and the anterior cingulum. Adenosine, which is blocked by coffee, is also calming.