What Does Coffee Do to Your Body? (Read and Find Out)

Coffee acts like a drug. Almost billions of people rely on it to go through a very busy and hectic schedule. It is the most popular beverage worldwide and about 30-40% of its population consumes it every day.

Coffee is always the talk of the town because of its effect on the human body. It does more than just keeping you alert and awake. 

Some studies show its benefits on health, while others indicate serious health issues. 

Coffee has caffeine, a natural stimulant for the central nervous system. To be more precise, it’s not about how coffee affects the human body but more about how caffeine affects it. 

According to the FDA, 400mg is a healthy coffee intake for adults. However, children and pregnant women should be cautious with the amount they take.

Reading the label and measuring cup size is also essential for the correct intake of caffeine. Also, age, overall health, and body weight are important factors that one should check since those affect coffee’s influence upon the body. 

Short Answer: Coffee can be beneficial for your body as it contains many antioxidants and has been proven to lessen the risk of a few diseases. However, excessive coffee intake can be dangerous to your body as well.

Drinking too much coffee daily makes you build a tolerance to it. 

Coffee affects your body in various ways that make you question what does coffee does to your body?

Let’s find out the effects of caffeine on your body. 

Long Term Effects of Caffeine

a cup of coffee with shapes of countries on it

Caffeine causes several long-term effects on your body. Drinking a healthy amount of coffee regularly proves to protect you against diseases such as Parkinson’s and Alzheimer’s.

Let’s look into other effects of caffeine on the body in detail.

Central Nervous System 

Caffeine is a central nervous stimulant used in many drugs to treat migraines, headaches, and drowsiness. 

All health benefits come from high-octane coffee while decaf coffee is not that impactful. 

Coffee helps you stay awake and alert, however, overconsumption can lead to:

  • Confusion
  • Vomiting
  • Hallucination
  • Drowsiness
  • Withdrawal syndrome
  • And Death( yes, death)

Overdose of caffeine drugs eventually leads to death due to convulsion. 

The safe amount is 400mg of caffeine per day. Anything above this amount can cause health risks.

Respiratory System

Coffee can cause increased blood pressure. This happens when caffeine causes arteries to widen the blockage of hormones or increase adrenaline. 

Moreover, caffeine is not a safe drink for people with irregular heart rhythms. An overdose might cause issues in breathing or rapid heart rate. You can read about how coffee can affect your blood pressure in my other article to know more.

Skeletal and Muscular systems

Caffeine can hinder the absorption and metabolism of calcium.  This can contribute to osteoporosis or bone thinning.

Overconsumption of caffeine may also cause your muscles to twitch.

Digestive and Excretory Systems

Coffee helps you digest faster by boosting the stimulating process. But, it can also cause acid reflux due to stomach acid.

It can also be known to cause upset stomach and heartburn. 

Reproductive System

Doctors warn pregnant women not to take too much caffeine. Caffeine overdose can cause slowed fetal growth and increase the risk of miscarriage. 

Although a cup of coffee is safe during pregnancy, I still recommend talking to your doctor first before consuming any amount. 

What Happens If You Drink Coffee Every Day?

Drinking coffee every day makes you dependent on caffeine. 

Daily consumption of caffeine stimulants leads to many health benefit issues and risks. 

You will feel more alert and focused on work. Plus, studies show that caffeine increase brain activity and neurotransmitters such as norepinephrine and dopamine. 

Other studies indicate those who drink coffee daily are less depressed than those who don’t. 

According to the Journal of Medicine, a daily cup of java reduces the risk of premature death in people above 50 than those who don’t drink coffee daily. 

Coffee has also been linked to lower body fat in women, especially those who drank two to three cups a day. Caffeine improves physical performance and helps burn fatty acids in the blood. 

However, keep in mind that coffee alone won’t make you slim and fit. A healthy diet and daily exercise help you maintain a healthy weight. 

When you have work piled up and nights when you need to prepare for the exam, coffee works like magic that saves your day. However, if you find yourself drinking it every day, it leads to addiction. 

The reason behind addiction is because caffeine binds with adenosine receptors in the brain that block sleep pressure. This makes the body create more adenosine that the average amount of caffeine cannot bind with increasing receptors in the mind. 

In layman’s terms, this causes low energy levels and tiredness, which make you crave more coffee. 

Not getting enough coffee daily make you develop withdrawal symptoms, including headache, irritability, inability to focus, and exhaustion. This further leads to a disturbing sleep routine. 

According to Advances in Psychiatric Treatment, daily consumption leads to being agitated, feeling anxious, nervous, and gives you jitters.

So, daily coffee intake is not harmful, but the key is to keep the daily consumption in check to avoid all the side effects. 

In conclusion, if you find yourself drinking coffee daily, stick to a moderate amount. (average amount here points toward 400mg coffee per day).

How Does Coffee Affect Body Weight?

A cup of coffee next to two silver spoons

Caffeine in coffee increases metabolism, which helps with weight loss. 

By itself, coffee is a very low-calorie beverage. One cup (240 ml) of brewed coffee has only two calories, without adding sugar, milk, or other ingredients.

Coffee contains several stimulants, including caffeine. Caffeine increases your metabolic rate that helps reduce fat in the bloodstreams

A study shows that increased caffeine intake over two years helps reduced weight; however, there is only a 1 pound weight difference than those who drink less coffee.

Coffee might not be that impactful to lose weight, but it is proven to maintain weight for a longer time. 

Here a study examined people who successfully lost their weight. Among all participants, those who drink coffee daily were able to maintain their weight loss than non-drinkers. 

Hence, drinking coffee does have a positive effect on people trying to maintain their weight. 

How is Coffee Good for You?

Coffee is good for you in many ways, but only if you drink in a moderate amount.

Coffee help boosts physical performance and increases focus and alert. It is also a known stimulant to reduce the risk of many diseases.

Study after study has proved that morning cup of joy can have many beneficial impacts on your body. 

Coffee contains various chemical substances that prove to be beneficial for the human body, some of which are:

  • Caffeine
  • Tannin
  • Citric acid
  • Chlorogenic acid
  • Acetaldehyde
  • Spermine
  • Putrescine
  • Scopoletin
  • Thiamin
  • Xanthine
  • Spermidine
  • Guaiacol

The number of main constituents of coffee are: 

Coffee ConstituentsAmount %
Caffeine 2–3% 
tannins3–5%
proteins13%,
fixed oils.10–15%
sucrose 6-7%

These substances help guard against many health issues among women, including Alzheimer’s and Parkinson’s disease.

Listed down are some of the health benefits that your cup of joy do to your body:

  1. Those who drink coffee daily are less likely to die from many leading death causes such as stroke, diabetes, kidney disease, and coronary heart disease. 
  1. Coffee contains many healthy nutrients Riboflavin (vitamin B2), pantothenic acid (vitamin B5): I, Manganese and potassium, Magnesium and niacin (vitamin B3).
  1. One to two cups of coffee daily prevents heart failure.
  1. Caffeine boosts energy levels and improves neurotransmitters. 
  1. Coffee lowers the risk of cirrhosis that affects the liver. 
  1. Coffee helps process sugar better and reduces the risk of type 2 diabetes.
  1. Caffeine in coffee increases fat burning and improves metabolic rate.
  1. Coffee helps prevent Dementia, Parkinson’s, and Alzheimer’s disease in older people. 

Drinking coffee daily along with a healthy lifestyle really increases longevity. 

How is Coffee Bad for You?

Coffee is a healthy beverage, but it can be bad for you if you go overboard with the suggested daily consumption.

Other factors such as type of coffee, brewed method, and overall individual health determine how the coffee will affect the body.

Read some of the health risks before you go ahead with another cup of coffee of the day. 

  1. Caffeinated coffee has a negative impact on your sleep quality and quantity. It disrupted sleeping patterns mainly if consumed close to bedtime.
  1. Large intake of coffee cause rhabdomyolysis and breakdown of weakened muscles.
  1. Daily caffeine consumption leads to psychological or physical withdrawal.
  1. Coffee stimulates bowel movement, and large intake can cause loose stools or GERD.
  1. Caffeine is known to increase alertness. However, more significant amounts may lead to anxiety or edginess. A high dose of over 300 mg at one time can cause an increase in stress.
  1. Coffee cause an increase in blood pressure in non-habitual drinkers.
  2. Coffee cause stimulation of urination.

To learn more about coffee’s effects on your body, watch the video below:

Hence, it’s important to take control of the amount you drink daily to avoid all these side effects.

Final Say

Well, one significant factor that determines how coffee affects your body is how much coffee you drink daily. 

Even if you are a fast-metabolizer of caffeine, you may still feel the effects more strongly if you don’t drink it regularly. Those who have been drinking coffee for a long time develop a tolerance, and caffeine won’t quite have the edge it used to.

You can read extensive studies from reliable sources to systematically assess the cardiovascular effects of regular coffee consumption. Results often show that regular coffee intake is safe and has many health benefits. 

However, remember the key to a healthy body is balance. A balanced amount of caffeine daily is safe for the body. 

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Matt Marshall

As I learn more and more about coffee and coffee products I want to share all my learnings with you here on this website. I hope you find my articles useful and entertaining to read.

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