Not only does caffeine keep you awake, but caffeine is also a central nervous system stimulant and affects your body in many other ways.
According to the U.S. Food and Drug Administration (FDA), a Healthlinepost says about 80% of adults in the United States use some form of caffeine every day.
Caffeine itself does not have much nutritional value. It has no taste, so it is sometimes not noticed in foods or beverages. Even some medications can contain caffeine without you even knowing it.
Caffeine is found in many foods and drinks.
This ingredient almost always causes some symptoms. When used in moderation, you may feel more active, but over time, too much caffeine can become addictive. According to the Mayo Clinic, consuming less than 400 mg of caffeine per day (about four cups of coffee) is safe for most healthy adults.
So read product labels and beverage information to adjust how much caffeine you consume. When you consume the same amount of caffeine daily, your body develops a response and tolerance to them. Other factors such as age, body mass, and overall health also affect the body’s tolerance to caffeine. If you want to cut back on caffeine, it’s best to do so gradually.
Here are the effects of caffeine on our bodies.
Central nervous system
Caffeine acts as a central nervous system stimulant. When it reaches your brain, the most noticeable effect is wakefulness. You’ll be more productive and less tired, so it’s a common ingredient in medicines to treat or control drowsiness, headaches, and migraines. Studies also show that regular coffee drinkers have a lower risk of Alzheimer’s disease, dementia, and a 45% lower risk of suicide.
These benefits are limited to high-octane coffee drinkers, not decaffeinated coffee beans.) Some people consider coffee to be a healthful drink, but like most foods, overuse of it can cause side effects. For example, too much caffeine can cause headaches.
This is mainly related to the body’s tolerance to caffeine. The blood vessels in your brain become accustomed to the effects of caffeine, so if you suddenly stop taking it, it can cause a headache.
Other symptoms of caffeine withdrawal include Anxiety, irritability, drowsiness. In some people, stopping caffeine suddenly can cause tremors. Although very rare, symptoms of caffeine overdose include Confusion, hallucinations, vomiting.
Overdose can also lead to death due to convulsions. According to the Mayo Clinic, overdose can occur when consuming large amounts of caffeine, when using certain energy drinks or drugs with caffeine. About 400 mg of caffeine is considered safe, the equivalent of about four cups of coffee, although the amount of caffeine in beverages often fluctuates greatly.
Digestive and excretory system
Caffeine increases the amount of acid in the stomach and can cause heartburn or upset stomach. It is not stored in your body, but processed in the liver and excreted in the urine. This is why you pee more when you drink coffee. If you have stomach problems, like acid reflux or ulcers, ask your doctor about using caffeine.
Circulatory and respiratory system
Caffeine is absorbed from your stomach, reaching peak levels in the blood after 1 or 2 hours. Caffeine can cause your blood pressure to rise for a short time. This effect is thought to be due to an increase in adrenaline, which helps to reduce peripheral circulatory resistance thereby causing an increase in blood pressure.
For most people, caffeine has no long-term effects on blood pressure, but if you have a heart rhythm disorder, caffeine can make the news worse. If you have high blood pressure or related heart problems, talk to your doctor about caffeine use.
Abuse of caffeine can cause rapid heart rate, arrhythmia, or breathing problems. In rare cases, an overdose of caffeine can lead to death from seizures or cardiac arrhythmias
Bone and muscle system
Taking caffeine in large amounts can interfere with calcium absorption and metabolism. This can contribute to osteoporosis. If you consume too much, caffeine can cause your muscles to twitch. If you stop using caffeine suddenly, you will most likely experience muscle soreness.
Caffeine travels in the bloodstream and enters the placenta. Since it is a stimulant, it can make your baby’s heart rate and metabolism increase. Excessive use of caffeine can also affect the development of the fetus and increase the risk of miscarriage.
According to the Mayo Clinic, you should limit your caffeine intake to 200 to 300 milligrams per day if you’re trying to get pregnant.
But on the other hand,
Caffeine helps to process information better
Research by psychologists at Tufts University in the US shows that caffeine can help enhance information processing skills, making coffee users better at reading tasks and correcting mistakes.
Scientists gave 36 people who normally drink coffee every day an experiment to read a news page and identify spelling and grammatical errors in 5 minutes. The scientists found that when the caffeine dose was increased for this group of people, their ability to read and recognize errors was much better.
For people with a low daily coffee dose, the level of caffeine that enhances information processing was 200 mg; while for those who usually drink a lot of coffee, the required level is 400 mg of caffeine. The same team of experts is also studying more of caffeine’s other effects, including looking at its effects on memory.
The study has just been published in the Journal of Experimental Psychology.