A morning is not complete without a coffee cup in the morning to have caffeine jolt every awake. Imagine without it, and everyone would be waddling to works, feeling sleepy.

One of the perquisites of the start of the day is that steaming cup of caffeine, a natural wonder that manages shocked people to wakefulness. The star of that cup of java is the caffeine, that its nature's wonder bean that is sometimes equated to a drug, reported NIH.

How does caffeine affect the brain? Read on and find out.

Caffeine occurs naturally in tea and coffee, also used in energy drinks and sodas sold. For some snack foods, it is a flavoring too. Most adults in 10 to 8 adults in the US take java in some form or the other.

The natural chemical works in this way. The body naturally produces a chemical like adenosine during the daytime; it increases during the day.

Sleepiness that is felt at day's end is adenosine, said Dr. Sergi Ferre, a brain scientist at NIH explains that it is time for the brain to rest and sleep.

The adenosine is blocked by the caffeine from affecting the brain cells. When adenosine is less, the urge to sleep is less. However, the body resets itself to its condition. The more caffeine is taken, the body makes more adenosine. It translates to more coffee, to get that buff when needed.

One fact is that adenosine makes it hard to quit caffeine in a lurch. Take less caffeine, and the excess adenosine will induce a feeling of unwelcome withdrawal for a time. Signs will be headaches and increased urges to doze away, anytime.

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Caffeine will have an interaction with chemicals in the brain. For example, more caffeine taken by an individual will end up making someone over-caffeinated. The heart will be faster and feel anxious or sick to the stomach.

For many people, the effect of caffeine is not exactly symmetrical. One reason is that breaking down the chemical is different for everyone. Genetics determines how the chemical gets broken down, according to Dr. Marilyn Cornelis, a nutrition researcher at Northwestern University.

Experts say that not everyone should take caffeine. One reason is those with acid reflux, those with sleeping troubles, those with high blood pressure, or heart problems. Examples like children, teens, women, or pregnant, breastfeeding ones should not take it.

Sometimes a good talk with a doctor will check on a person's status.

According to Ferre, mixing alcohol and caffeine is not a good thing for even healthy ones. One effect of caffeine is to block the impact of alcohol in the brain, allowing people to drink more on the fly creating a dangerous situation that makes a person drunker and impaired.

Studies show that caffeine is harmless in low to medium amounts when taken. Studies demonstrate that it has benefits to thinking, learning, and memory. Having more caffeine gives more concentration to people and chances of remembering better.

Taking a few cups of coffee will be suitable for everyone, but caffeine may have more sugar. Just take the right amount and not too much.

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