How coffee affects the body's immunity?

3 January 2025
احمد مكي
How coffee affects the body's immunity?

Coffee is one of the most consumed beverages around the world. It is not just a drink that gives energy and activity, but it contains many health benefits related to improving various body functions. One of the most prominent questions that occupy coffee lovers is: What is the effect of coffee on immunity?


This drink contains a rich group of antioxidants that play an important role in protecting cells from damage and strengthening the immune system. Caffeine, one of the main components in coffee, also contributes to strengthening immunity in various ways, by reducing inflammation and stimulating physical and mental activity. In this article, we will learn together about the benefits of coffee and its role in supporting the immune system, in addition to analyzing the relationship between coffee consumption and resistance to various immune diseases. If you are a coffee lover and are looking for information supported by scientific studies, continue reading to discover how this famous drink can positively affect your health.


Benefits of coffee for the body


Coffee is not just a morning drink that enhances activity and alertness, but it is a rich source of nutrients and beneficial compounds that provide many health benefits to the body. Here are the most important benefits of coffee:


1. Boosting activity and improving concentration


Coffee contains caffeine, a natural stimulant that helps improve attention and increase concentration, making it ideal for improving mental and physical performance.


2. A rich source of antioxidants


Coffee contains a large amount of antioxidants, which help protect the body from damage caused by free radicals, reducing the risk of chronic diseases such as heart disease and cancer.


3. Stimulating the immune system


Thanks to antioxidants and other active compounds, coffee plays a role in boosting the immune system, which helps the body fight diseases and infections.


4. Improving liver health


Studies indicate that drinking coffee regularly can reduce the risk of liver diseases such as cirrhosis and liver cancer, and improves liver function in general.


5. Reducing the risk of chronic diseases


Coffee can reduce the risk of some chronic diseases such as type 2 diabetes and heart disease, thanks to its effect on improving insulin sensitivity and reducing inflammation.


6. Boosting Brain Health


Coffee helps prevent neurological diseases such as Alzheimer's and Parkinson's, as it enhances brain activity and reduces the deterioration of nerve cells.


7. Improving physical performance


Caffeine enhances the secretion of adrenaline, which helps improve physical performance during exercise and increases endurance.


8. Contributing to improving mood


Drinking coffee is associated with improving mood and reducing the risk of depression, as caffeine positively affects the neurotransmitters responsible for happiness.


9. Boosting digestive health


Coffee improves digestion and stimulates bowel movements, which helps prevent constipation.


10. Weight loss and metabolism boosting


Caffeine helps increase the metabolic rate, which helps burn calories better, and is beneficial for people seeking to lose weight.


Despite the many benefits of coffee, it should be consumed in moderation to avoid side effects such as insomnia or increased heart rate. The appropriate amount for most people ranges from one to three cups per day.


If you are a coffee lover, you can enjoy its health benefits when consumed in moderation and within a balanced diet.


Does drinking coffee reduce immunity?


Coffee is a healthy drink if consumed in moderation, and it can support immunity thanks to the antioxidants and active compounds in it. However, to maintain strong immunity, it is preferable to consume coffee in a balanced manner while paying attention to a healthy lifestyle that includes good nutrition, adequate sleep, and exercise, so we can say that coffee has a positive and negative effect, which we explain in the following:

Positive effect:


Antioxidants: Coffee is rich in antioxidants such as polyphenols, which help protect immune cells from damage and improve their efficiency in resisting diseases.


Reducing inflammation: The caffeine in coffee can help reduce chronic inflammation, which is beneficial for the immune system.


Stimulating the nervous system: Coffee improves concentration and energy, which supports the body's functions in general, including immunity.


2. Negative effect when excessive:


Increased stress: Consuming large amounts of coffee may raise the level of cortisol (stress hormone), which may lead to weak immunity over time.

Insomnia: Excessive caffeine can lead to sleep disturbances, which negatively affects immunity, as good sleep is essential to support immune system functions.


Dehydration: Coffee is a diuretic, and drinking too much of it without adequate water replacement can lead to dehydration, which weakens immunity.


Does coffee destroy brain cells?


Coffee, when consumed in moderation, does not destroy brain cells. On the contrary, it has a positive effect on the brain in many cases, but there are some points that must be taken into account to accurately understand the relationship between coffee and brain health.


Positive effect on the brain:


Stimulating mental activity: Caffeine, the main component in coffee, is a stimulant for the central nervous system, and works to improve concentration, short-term memory, and the ability to analyze.


Prevention of neurological diseases: Studies indicate that drinking coffee may help prevent some neurological diseases such as Alzheimer's and Parkinson's, as caffeine works to protect brain cells from damage and enhances the work of neurotransmitters.

Boosting alertness: Coffee can improve mental alertness, reduce feelings of mental fatigue, and enhance the ability to think clearly.


2. Negative effects of excessive consumption:


Secretion of cortisol (stress hormone): If consumed in very large quantities From coffee, this may lead to increased secretion of cortisol, a stress hormone that can harm the brain in the long term, especially if excessive caffeine consumption continues for long periods.

Increased anxiety: Excessive caffeine consumption may lead to excessive anxiety, which can indirectly affect concentration and memory.

Insomnia and sleep disorders: Caffeine affects the quality of sleep, and when consumed in large quantities or late in the day, it may cause difficulty sleeping, which affects the brain's ability to recover and regenerate.


3. The effect of coffee on nerve cells:


In fact, studies do not indicate that coffee destroys brain cells, but rather have shown that caffeine can have a direct effect in promoting brain health. However, if coffee is consumed excessively, it may lead to negative effects on concentration and memory due to the effects of anxiety and insomnia.


What does coffee do to the human body?


Coffee has multiple effects on the human body thanks to its main components such as caffeine, in addition to the antioxidants and other compounds it contains. When you drink coffee, your body goes through a series of physiological reactions that affect your mind and body in general. Here's what happens:


Stimulates the nervous system:


The caffeine in coffee is a central nervous system stimulant, which activates the brain and improves focus and attention. Caffeine increases the secretion of neurotransmitters such as dopamine and norepinephrine, which helps you feel alert and active.


Caffeine also helps reduce feelings of fatigue, making you feel more active and focused.


2. Improves mental performance:


Drinking coffee can improve short-term memory and the ability to make quick decisions. Coffee helps activate some areas of the brain responsible for logical thinking and attention.


3. Enhances cardiovascular function:


Coffee may increase your heart rate and blood pressure for a short period after drinking it. This is because caffeine increases the secretion of adrenaline, a hormone that increases the activity of the nervous system.


Consuming coffee in moderation may help reduce the risk of some heart diseases, as coffee contains antioxidants that improve the health of blood vessels.


4. Increases metabolism and fat burning:


Caffeine stimulates metabolism, which helps the body burn fat more efficiently. Therefore, caffeine is a common ingredient in weight loss supplements.


Coffee can boost physical energy, making it an ideal pre-workout drink, as it helps improve performance and increase endurance.


5. Effect on the digestive system:


Coffee stimulates the production of stomach acid, which helps digest food faster. However, it may lead to some digestive problems such as acidity or gastric reflux in some people.


6. Antioxidants:


Coffee contains antioxidants that fight free radicals and reduce inflammation in the body. These antioxidants help prevent chronic diseases such as heart disease and cancer.


7. Effects on sleep:


Since coffee contains caffeine, it affects the quality of sleep. Caffeine stimulates the nervous system, which can prevent you from sleeping if you drink coffee late in the day.


8. Effect on mood:


Drinking coffee can temporarily boost your mood, as caffeine helps increase the secretion of hormones associated with happiness such as serotonin and dopamine.


Therefore, coffee can help combat depression and feelings of stress temporarily.


9. Effect on the immune system:


Caffeine and other compounds in coffee may help reduce chronic inflammation, which contributes to strengthening the immune system. Some studies suggest that coffee may play a role in strengthening immunity and fighting diseases.