Effects of Caffeine on Health: Role & Symptoms of Overdose

Caffeine in tea, coffee, cola, cocoa and many other products have a stimulant effect. It means it stimulates our heart, central nervous system, muscles and even controls our blood pressure. So, one must look after their total caffeine intake. While some may experience positive effects of caffeine, overconsumption can lead to high blood pressure, obesity, headache or depression.

Here you will find information on how caffeine impacts our body, its uses, and caffeine overdose, symptoms and treatment process.

Let’s begin!

What Is Caffeine and Why Do People Need It?

Before we skip into discussing the effects of caffeine in our body, let's first discuss what it is. Caffeine is a stimulant and a type of drug most commonly used by people worldwide. It helps alleviate fatigue and increase wakefulness. Even some doctors recommend it to treat drowsiness and as a pain reliever.

Not only this, but it also improves people's focus and mental concentration levels. It does so by suppressing the appetite and giving an awakening feeling. Find in-depth information on what does caffeine do in the below section.

What Are the Effects of Caffeine on Our Body?

There are several effects of caffeine on the body's metabolism. To mention some, they include:

Boost your central nervous system, so you feel more awake. In addition, it may also increase your energy level.
It enhances acidic release in the stomach. This may lead to a heart-burning sensation and cases of an upset stomach.
It increases the body's blood pressure level.
Since caffeine is a diuretic, it helps the body eliminate all extra water and salt through urination.

Remember, after you have caffeine, it takes an hour or so to reach its maximum effect. However, the effects of caffeine on the body will continue to last for four to seven hours.

What Are Some of the Uses of Caffeine?

If you are wondering what is caffeine used for, it mainly has the following purposes:

Helps in Weight Loss: Consuming the substance leads to instances of weight loss. This is because it suppresses your appetite and stimulates the process of thermogenesis.
Improves Brain Function: Caffeine directly interferes with the brain's adenosine receptors. For example, coffee contains polyphenol antioxidants that control how your brain thinks and improve your mental reasoning skill overall.
Prepare Patients for Medical Conditions: One of the significant effects of caffeine is it prepares the body for procedures like colonoscopy and endoscopy. Not only this, but there is also evidence indicating caffeine increases glutathione. In addition, it is an antioxidant that helps in the detoxification process of the liver.
Improves Sports Performance: Caffeine also increases how much the body can endure physically. Thus, it helps improve an individual's sports performance. There is even research to prove that its consumption reduces the perceived exertion and increases endurance performance.

Which Signs and Symptoms Indicate Excessive Caffeine Consumption?

Since caffeine is not an illicit drug, people don't usually disguise it if they consume it. So, it is easy to judge overdose cases if there is too much caffeine consumption. These include:

Change in the mood like feeling depressed or agitated
Symptoms like insomnia, jitteriness, heart palpitation, tremors, and nausea
Dizziness
Headaches
The excessive urge to consume a caffeinated beverage

How Much Caffeine Is Considered Too Much?

Millions of people rely on caffeine to get through their days. Some need it to stay alert while others need it to improve concentration. First, however, one needs to make sure they are not consuming too much caffeine because of the several reasons mentioned above.

So, how much is too much caffeine? For healthy adults, it is safe to consume up to 400 milligrams a day. This means four cups of brewed coffee or two energy shot drinks are fine. However, when it comes to kids consuming caffeine is not a good idea. On the other hand, adults must caution young adults and adolescents against too much caffeine intake.

Also, if you are pregnant and breastfeeding, talk to your doctor about reducing your caffeine limit to 200 milligrams in a day.

Some ways to curb your habit and control the effects of excessive caffeine in the body are as follows.

What Are the Ways to Reduce Caffeine Consumption?

People often find it difficult to cut back their total intake. So, they need professionally recommended ways to curb their habit. If you abruptly stop consuming coffee, there are chances of experiencing symptoms of caffeine withdrawal.

In fact, withdrawal symptoms are common in all types of caffeine consumption, including fatigue, headaches, irritability, and reduced focus. So, you can start with the following tips:

Take Your Time While Cutting Back: Do not stop your consumption completely at once. Instead, decrease the amount. For example, drink only one can of soda or a smaller cup of coffee. Also, make sure you refrain from consuming caffeine later in the day. As a result, you will have a lower possibility to undergo any potential withdrawal effect.
Check the label: Pay close attention to the food and drinks you consume and if they contain any caffeine content. For this purpose, always read the label. However, remember that many food items do not mention their caffeine content, so your estimate may be low.
Look for Decaf Options: A good thing about decaffeinated drinks is that they look and taste just like caffeinated beverages.
Check for Caffeine-free Pain Relievers: Many pain relievers contain caffeine. So, check the bottle to choose only those free from them.
Go Herbal: One of the best ways to cut caffeine from life is by trying herbal options. Or you can also shorten brewing time to cut down caffeine content.

There are also times when a person may need medical treatment, including supplements, intravenous fluids and activated charcoal to control the effects of caffeine. So, be mindful of how much caffeine you are taking to avoid any health problems.

Frequently Asked Questions

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What are the alternative caffeine drinks one can have without experiencing any side effects?

Some natural caffeine alternative drinks that one can have are homemade smoothies, coconut water, green teas, etc.

Are there any long term health issues of caffeine overdose?

As a result of overconsumption of caffeine, people can experience difficulty sleeping, stomach ulcer, and depression or anxiety issues.