15 Health Benefits of Coffee: Positive and Negative Effects

15 Health Benefits of Coffee: Positive and Negative Effects

Health Benefits of Coffee

Coffee has become one of the staple foods of our nation. Not having enough coffee makes us moody, tired, uncooperative and unfiltered. So what is it about this brown substance that turns us into super-functional, effective and friendly beings? And is it even good for us?

Well, fret not — if coffee is an important part of your day, it might be good to know that it has your best interests at heart. Read on to explore all how your daily cup (or three) of joe benefits you!

Is coffee good for me, my body and my health?

The short answer is yes. However, this doesn’t mean that you should over-indulge! More than 5 years ago the answer was not so simple, but since 2015 it was considered part of a healthy diet to consume 3 – 5 cups of coffee per day, which works out to about 400mg of caffeine.

There have been many studies conducted since then and one particular study in 2017 found that those who frequently drank coffee had fewer health problems overall compared to those who drank no coffee at all.

Not everyone should be consuming coffee on the daily, though, as some conditions are still unclear. Overconsumption is a great concern and the safety of caffeine use during pregnancy is not clear enough yet.

Does coffee make me smarter?

The main ingredient in coffee, caffeine, acts as a stimulant. When the caffeine reaches your brain through your bloodstream, it blocks adenosine, an inhibitory neurotransmitter that can act as a central nervous system depressant.

This then causes other neurotransmitters to fire more, leaving dopamine and norepinephrine which makes you happier and more alert.

Other brain functions are also improved besides your energy levels and attention — your memory might perform better, your mood will be improved and even your reaction times might be quicker! This will help you make smarter decisions, quicker with fewer mistakes.

Can coffee help me lose weight?

Good news – yes! Caffeine is absorbed so quickly into the bloodstream that it increases your heart rate. This, in turn, increases your metabolism and can lead to increased fat burning by 10% – 29%!

Regular caffeine consumption has shown to enhance the metabolic rate between 3% and 11%, so make sure to always have a cup of coffee directly after a big meal to help you process your food faster!

Another thing you might have noticed is that caffeine can also make you feel full, which means that for a while after your break-time cup, you might be less hungry too!

What impact does coffee have on my physical performance?

The alertness in your brain we spoke about earlier also increases adrenaline levels in your blood, the hormone better known as the fight-or-flight stimulant. The adrenaline that is released in the brain prepares your body for intense physical performance.

To fuel this performance, caffeine also stimulates the nervous system to break down body fat, making use of the fatty acids. This means that your physical performance could be improved by an average of 12% by simply having your morning cup of coffee!

Remember to have a cup of coffee an hour before your gym-session — you’ll be grateful for the boost in energy!

What impact does coffee have on my mental performance?

Studies have shown that just one cup of coffee — about 75mg of caffeine — can have a psychoactive effect on the brain, meaning that it stimulates the brain to increase performance, specifically when it comes to being alert, paying attention and concentrating for long times.

Caffeine also enhances the formation of memories, which means that performing tedious, repetitive tasks can be done effectively.

The peak in mental performance is actually what started the international trend of grabbing a cup of coffee on your way to work because increased productivity became a demand in the fast-paced corporate world.

Are all kinds of coffees equally strong?

There are different types of coffees with different types of strength. The strength of the coffee depends on the concentration of the caffeine in the coffee, which is determined when the coffee is produced.

The strongest type of coffee is an espresso, served in a small cup the size of a shot glass, packed with around 70mg of caffeine. Compare that to a normal cup of coffee from a coffee machine (dripper), which contains about 200mg of caffeine and you’ll know to save the espresso for a special day!

A cup of instant coffee has about 140mg of caffeine and contrary to what the name says, decaffeinated coffee contains 8mg of caffeine. This makes it easy to determine what to have, based on your energetic needs for the day!

Does it matter how my coffee is prepared?

Is there a difference between coarse or fine ground coffees? Dark or light roast? The short answer: to your health, yes. The roasting process reduces chlorogenic acids but forms other compounds.

The concentration of these compounds that you consume depends on how you make your coffee; for example, drinking an espresso would be consuming the highest concentration of compounds, because you’re hardly adding water to the coffee.

Boiling your coffee forms an oil that contains two compounds called diterpenes: cafestol and kahweol. These compounds increase the bad type of cholesterol (LDL) and even slightly lower the good kind (HDL).

How does adding milk or sugar change what my coffee does to my health?

The effect of adding sugar to your coffee depends on how much sugar you consume per cup. Adding large scoops of sugar to your coffee will increase the jittery feeling you may feel after having too much coffee.

That’s because sugar works similarly to caffeine. Lots of sugar in your coffee will enhance the adrenal effects of the coffee, meaning that your alertness will be even more intensified.

You may also struggle to fall asleep. Adding full cream milk might mean that your cup of coffee now contains more fats than it used it. There is no concrete evidence, however, that sugar and milk cancel out the benefits of caffeine.

Is coffee really addictive?

Unfortunately, we don’t have good news. Extensive studies have shown that over time, consumers build a reliance on caffeine and develop withdrawal symptoms such as headaches, fatigue, and irritability when consumption is stopped.

Some people who consume more than 400mg of caffeine report feeling anxious, shaky and having an irregular heartbeat. However, over time they built a tolerance, which leads them to keep increasing their daily consumption.

It’s also fair to note that caffeine is a psychoactive drug, which not only increases addictive tendencies but is also habit-forming.

Are there any beneficial nutrients and minerals in coffee?

Yes. Coffee contains vitamin B1; vitamin B2; vitamin B3; vitamin B5; manganese; calcium; potassium and magnesium — all nutrients that form part of your recommended daily intake for a healthy diet.

To exceed the daily recommended allowance of each mineral or nutrient would require dozens of cups of coffee, so don’t be concerned about mineral toxicity.

Is it true that coffee can lower my risk of Diabetes Type 2?

One very evident negative effect on our nation’s poor eating habits is Type 2 diabetes. It affects millions of individuals all around the world.

Having type 2 diabetes means that your blood sugar levels are constantly elevated due to a reduced ability or inability to secrete insulin or inherent resistance to insulin.

Regular consumers of coffee have been found to have up to 50% less risk of developing type 2 diabetes, with one single cup of coffee every day reducing your risk by 7%!

What about coffee protecting me against dementia and Alzheimer’s disease?

Alzheimer’s disease is characterized by a mental decline and the onset of dementia and it usually affects adults over 65. There is no cure for this disease, so there has been lots of research to determine how the disease can be prevented.

One of these studies in 2017 discovered 24 compounds that can protect the brain against dementia, with caffeine being among them. Other studies have shown that daily coffee drinkers decrease their risk of developing Alzheimer’s disease with up to 65%.

Does coffee also lower my risk of Parkinson’s disease?

Similar to Alzheimer’s disease, Parkinson’s disease is a neurodegenerative condition with no cure.

Parkinson’s is caused when neurons in the brain responsible for the generation of dopamine, die and the disease is characterized by light to vicious tremors, slow and difficult movements, slow and slurred speech and a range of other health problems.

In 2007 a study was published that showed regular coffee drinkers with up to 60% reduced risk of developing Parkinson’s disease.

Does coffee protect or harm my internal organs?

Coffee is very good for the liver, as it reduces the risk of developing cirrhosis, or scarring of the liver. This leads to the reduced functionality of the liver — something that caffeine protects against.

Some studies have also shown that particularly female coffee drinkers have a lower chance of developing heart disease and coffee drinkers overall have a 20% less chance of having a stroke!

Can coffee lower my risk of getting cancer?

It seems that your daily cuppa joe will also protect you against liver and colorectal cancer — the third and fourth causes respectively of cancer death around the world. Studies have proven that daily caffeine consumers have up to 40% less risk of liver cancer, while heavy coffee drinkers have a 15% lower chance of colorectal cancer.

Can coffee cause heart disease or a stroke?

Some people who start drinking coffee for the first time initially complain that their blood pressure is increased. This might happen, but with daily consumption, it usually levels out again, unless you have some sort of inherent blood pressure problem.

There is no proof that caffeine increases heart disease, despite these instances of increased blood pressure. Coffee drinkers also have a 20% less chance of having a stroke, so in our opinion, you’re safe!

Does coffee contain oxidants or antioxidants?

Coffee contains a whole bunch of antioxidants, which protects sensitive tissue against reactive molecules before it can inflict any harm. This means that antioxidants are the good guys!

The best-known antioxidant in coffee is chlorogenic acid, which is also incidentally the main antioxidant. Scientific experiments show that chlorogenic acid evens out insulin levels and inhibits the absorption of glucose inside the digestive system. This probably explains why coffee drinkers have lower rates of both heart disease and diabetes!

Does coffee extend or shorten my life?

Looking at all the risk reduction in developing health-related problems, simply by drinking your daily cup of coffee, it’s easy to see that drinking coffee is bound to extend your life.

People who drink only one cup of coffee per day have been shown to have a 12% less chance of premature death. Two to three cups of coffee a day gives you an 18% chance of living longer!

Although coffee alone can’t guarantee a longer life, it certainly contributes to your overall health, which helps prevent premature death due to health-related problems.

Is it true that coffee is high in cholesterol?

Early studies showed that coffee increased cholesterol levels and not just cholesterol levels in general, but what is considered bad cholesterol or LDL. However, it was later found that this is only true of coffee that has not been filtered, like coffee prepared in a typical Turkish style.

Coffee contains oily substances (diterpenes) which raises cholesterol and there are two main types called cafestol and kahweol.

These two substances can be filtered out by drinking pre-filtered coffee or making use of paper filters or other filtering methods. So, to answer your question, coffee is not high in cholesterol, but certain types of coffee may contain cholesterol-raising elements.

Does coffee have an effect on my hair?

If you haven’t heard enough yet to convince you to take up drinking coffee, pay close attention: coffee can restore hair growth and also prevent hair loss!

Some other oily ingredients in coffee include phytosterols, which promotes the retention of moisture and enhances absorption thereof.

This leads to an improved structure of newly formed hair follicles and increased growth. On top of that, your coffee brew can be used as a hair mask when combined with a tablespoon each of honey and olive oil.

Other health benefits of coffee include:

  1. It sometimes acts as pain-killers

After a workout, you may have no greater wish than to have the dull aching in your muscles disappear. Good news — only two cups of coffee can help reduce post-workout muscle pains by 48%. Remember coffee before the gym for energy; coffee after the gym for pain!

  1. You’re eating more fiber

If you drink five cups of coffee per day, you have already consumed almost half of the recommended intake of fiber, because one cup contains around 1.8g of fiber. The daily recommended intake of fiber is anything between 20 and 35g. This is why weight-losing programs take your coffee intake into account when working out your daily, weekly and monthly meal plans.

  1. Stronger DNA

It seems that coffee drinkers have white blood cells with fewer instances of the DNA strand spontaneously breaking, which means that the building blocks of their DNA are stronger.

  1. You have a lower chance of contracting Multiple Sclerosis

Having at least four cups of coffee daily has shown to prevent neural inflammation. It is the inflammation of neurons that leads to Multiple Sclerosis. This means your coffee can prevent the development and reoccurrence of MS.

  1. Less chance of gout

In a large study involving thousands of men, it was proven that coffee consumption decreases the risk of developing gout, specifically in men. This is because coffee increases the rate by with your body excretes uric acid, effectively lowering the uric acid levels in your body. Uric acid is known to be the largest contributor to gout.

  1. Good for your eyes

The strong antioxidant we spoke out earlier, chlorogenic acid helps to prevent retinal damage. The damage could be caused by glaucoma, aging or diabetes, all of which could lead to partial or complete blindness.

  1. Good for your teeth

Strong black coffee helps to prevent tooth decay by killing the bacteria found on teeth. The bacteria cause plaque and other buildups on the teeth that are detrimental to the health of your teeth.

Coffee, especially strong black coffee, will help remove this buildup on the teeth. However, as soon as you add milk and sugar, this benefit disappears, seeing as sugar is well-known to cause tooth decay and the oils and fats in milk are also prone to cause some bacterial decay.

  1. Good for your gums

In a long-term study spanning over 30 years it was discovered that instead of promoting gum diseases, coffee actually protected the gums by aiding in teeth cleanliness. Because teeth are kept free of bacteria and plaque buildups, the gums are kept free of infection, inflammation and unnecessary tenderness.

  1. Good for your skin

The National Cancer Institute published a study that discovered that the consumption of coffee decreases the risk of melanoma or cancerous skin growths. It was also found that the more coffee was consumed, the lower the risk of melanoma was.

  1. Good for your job

Coffee consumption in the workplace has become standard and has been accepted as part of the culture. That’s because it helps you look at yourself, your job, your colleagues and your workplace with more positivity.

Surveys and some informal research have also discovered that regular coffee drinkers were more prone to constructively partake in office activities, whether work-related or socially.

  1. Good for your coordination

Caffeine improves your neuromuscular coordination by helping your brain to deliver messages to your muscles faster. This means that your hand-eye coordination will be improved and your reactions will be faster. So you’ll have a greater chance of catching yourself after almost tripping, after rather than before your morning coffee!

  1. Good for your digestion

Drinking coffee every day can help with your digestion by helping to prevent a range of digestive diseases from Crohn’s to celiac. Remember that your colon is a muscle. Coffee stimulates muscles, so coffee will inevitably have an impact on your digestion.

Drinking coffee also cuts your risk of colons cancer by almost a third.

  1. Good for your hair

The oils in coffee are absorbed by your skin and particularly your scalp. This means that your scalp will stay moisturized for longer, helping to eliminate dandruff from your life.

As a bonus, you can also combine your raw coffee powder with coconut oil and other essential oils for hair and apply it as a hair mask. If you are a brunette, this might even give your hair color a bit of life again!

  1. Good for your sex life

If you’re struggling with erectile dysfunction, you might want to try drinking two to three cups of coffee every day — it might help you a long way!

Similarly, caffeine has been found to increase libido in women by increasing blood flow to the genitals. Unfortunately, this is only found when a woman has had one single cup of coffee and let’s be honest – who does that?

  1. Good for your memory

Caffeine stimulates the brain and improves some brain functions like short-term memory. The neural pathways in your brain are stimulated to fire more rapidly when you’ve had coffee. This means that information is processed faster in your brain, which increases core functions such as processing and storing of information.

  1. Good for your mental health

Coffee has been linked to lower rates of depression in both men and women in a range of studies. It activates neurotransmitters that control moods, like dopamine and serotonin. This makes you feel happy and relaxed.

There you have it. Coffee is good for you in a variety of different ways, from your mental health to your physical health. Don’t hesitate — go and grab a strong cuppa joe right now!

Source:

Harvard Website

BHF Coffee Study

CNN.com

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Nicolas Desjardins

Hello everyone, I am the main writer for SIND Canada. I've been writing articles for more than 10 years and I like sharing my knowledge. I'm currently writing for many websites and newspapers. All my ideas come from my very active lifestyle, every day I ask myself hundreds of questions to doctors, specialists, and physicians. I always keep myself very informed to give you the best information. In all my years as a computer scientist made me become an incredible researcher. I believe that any information should be free, we want to know more every day because we learn every day. Most of our medical sources come from Canada.ca and government research. You can contact me on our forum or by email at info@sind.ca.