science cba2

SCIENCE CBA 2

BY ALEXANDRA BLAJ

Do the benifits outway the negatives of caffeine?

an application of science that influences human health

About Caffeine :

• Caffeine is most commonly found in tea, coffee and energy drinks

• It is a Natural stimulant that makes you feel awake and alert and pushes off tiredness

• It is one of the most consumed bevreges in the world

• The chemical formula is C8H10N4O2

• The Food Standards Agency stated that 400mg is the safe limit for most healthy adults to consume per day

• Caffeine affects the brain and substances that stimulate the brain are called psychoactive.

The science behind caffeine

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Adenosine

Brain and neurons

Digestion and Absorption

After caffeine is ingested it travels through you digestive system and is absobed into you bloodstream by the Veli that line the small intestine , the network of cappilaries allow for direct transfer of nutrients into the bloodstream. Caffeine mainly effects the brain / nervous system

Adenosine It regulates the production and release of neurotransmitters eg. dopamine. It also promotes sleep. Caffeine binds to the same receptors on neurons that adenosine uses, this reduces the impact of the adenosine and results in feeling energized and less tired.

As caffeine is in the bloodstram it eventually leads to you brain. Caffeine effects the neurons which are maily located in the outer layer of the brain (cerebral cortex) that is mainly in charge of functions.Caffeine affects the neurons by blocking a brain chemical called adenosine.

Here is how caaffeine works

The positives of caffeine

it works properly to keep people awake

increase in dopaime

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mprove mood

effective

It can allow people to be more concentrated and alert when needed eg while driving/ meeting a deadline

decrease chance of depression

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concentration

It can increase physical perfromance in sports.as athletes are more alert

it is on a FDA list that staes it can help reduce migrane.among the list is also asprin

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AiDs migranes

sports

The negatives of caffeine

people can become depend and heavily rely on caffine( it is a drugand it can be addictive)

it has been known for caffeine to raise blood pressure which can cause stroke / artery damage

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addiction/dependacy

high blood pressure

Icaffeine can lead to lack of sleep as you are too alert to sleep

as it can improve alertness this can be too much for some people

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insomnia

anxiety

some times caffeine can have an opposite affect or stop working if used to much

Coffe can have a laxitive effec, caffeine also stimulates bowel movements by increasing peristalsis

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fatigue

indigestion

My opinion

i would say the a moderate regulated amount of caffeine is benificial and can help concentrate and feel awake. Seeing as i am still young i would not drink caffeine every day as i still feel energized without it but other people may feel the need for caffeine as maybe they struggle to feel awake on a daily baisis. As long as it is moderatly used and not abused i would say it is benificial.

final thoughts

THANK YOU!