How much Caffeine is in Coffee?

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How much Caffeine is in Coffee?

How much Caffeine is in Coffee? 

There are plenty of reasons why we like drinking coffee. And apart from the extremely delightful taste there’s also the ever present importance of caffeine in our lives. Indeed, a huge number of adults can’t function without having their morning cup of coffee — which is why we’ll explore how much caffeine is in coffee, and how it affects us!


How does caffeine work?

When we consume our morning coffee our gastrointestinal tract rapidly absorbs the caffeine in it with 99% of it being absorbed within 45min of ingestion.

Very, very, simply caffeine molecules bind to receptor cells in the brain calming the activity of the central nervous system that triggers tiredness. 

This process is known as "competitive inhibition" and effectively delays the onset of fatigue, increases alertness and improves people's ability to sustain attention.


Mental Alertness

When it comes to the effects of caffeine on our bodies, one of the most prominent ones is mental alertness. Once you drink coffee — or any other caffeine-infused beverage, you can expect your thinking to be clearer and your general alertness to be raised. If you’ve experienced a night of bad sleep or had a few too many drinks at the pub the night before, caffeine can temporarily lessen the level of fatigue that you feel as a result.

This is just one of the many reasons why we rely on a cup of Joe to give you that much-needed boost both in the morning and afternoon.

Some studies by the Food and Drug Administration suggest that more than 80% of all the adult people in the United States consume caffeine through some sort of beverage each day.




Caffeine Intake

As you might have guessed yourself, caffeine intake is capable of causing a wide variety of symptoms. For one, you will definitely feel more energized after caffeine intake; but ingesting too much may lead to mild withdrawal symptoms later on.

If you’re wondering how much caffeine is good for you — it is suggested that around 300-400 milligrams depending on the person is an acceptable amount of caffeine during a single day.

There are many variables influencing how much caffeine is in a cup of coffee – How it’s brewed, how much coffee is used, how long it’s brewed for, the roast type of the beans and the bean varietal all play a role in how much caffeine is in your cup.

As a very general guide 60-80mgs of caffeine per espresso shot is a good yard stick.

Cold Brew carries around 100-140mgs of caffeine per 330ml if the concentrate is cut into a 50/50 portion with milk.

Drip or Batch Brew can carry more caffeine per cup due to it not being diluted at all and can carry 200-250mg per 12oz (medium) cup.

Again, as a very general guide about 4 standard espressos or 2 medium coffees is on the upper recommended caffeine limit per day.

Also, the effect of caffeine on your body will become less and less pronounced as time goes on; particularly if you keep drinking caffeine on a regular basis. This is because your body starts developing a steady tolerance to the chemical. Apart from this, your overall health, body mass, and age tend to affect how caffeine will impact you.



Too much caffeine?

You can have too much of a good thing.

In moderation, caffeine can have a wonderful affect – better focus and being more alert, even metabolic benefits.

On the flipside, although very rare, too much caffeine can be deadly.

The toxic amount of caffeine is around 10g or around 30 highly caffeinated energy drinks consumed in rapid succession. Most likely though your body would stop you before reaching those toxic levels.

Researchers did note that one poor fella that did die ingested a whopping 51g of caffeine in one sitting. It was noted that this guy received his caffeine via caffeine pills or the powdered form of caffeine, rather than energy drinks or coffee.

On the more moderate level - several types of symptoms occur with having too much caffeine – dizziness, feeling jittery, diarrhea, increased thirst, insomnia, headache, fever and irritability.

This can be avoided by not consuming excessive amounts of caffeine and sticking to the limit of 400mg per day or less if you’re particularly caffeine sensitive.

If you’ve had one cup too many and feeling worse for wear, a piece of fruit and a big glass of water can really help settle things back down.


Caffeine Withdrawal 

Perhaps one of the best benefits of the modern world for us coffee drinkers is that we never really have to suffer the effects of caffeine withdrawal as coffee is ubiquitous in nearly every city in the world. 

If you do find yourself without a coffee or you’re just cutting down on your consumption. This is how you can expect to feel- Headaches, fatigue and difficulty concentrating. 

Some people report that they may even feel like they have the flu with nausea and muscle pain.

If you do persevere with cutting caffeine out of your life you can expect this to start between 12 to 24 hours after stopping caffeine, with peak intensity between one and two days, and for a duration of two to nine days.  

These symptoms are very dependent person to person. 

It maybe uncomfortable, but these symptoms will subside and won’t be fatal.

1 Response

Ken Peile
Ken Peile

April 20, 2021

There can never be enough coffee

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