How Coffee Affects Your Body (And Brain) In Just 6 Hours

How Coffee Affects Your Body (And Brain) In Just 6 Hours

why coffee drinkers live longerHealth

Besides water, people around the world drink coffee more than any other beverage. Plants from which coffee beans are derived are refined in more than 70 countries. Drank as a morning “eye-opener” or burn the midnight oil lamp, billions of people around the world enjoy this dark and tasty beverage.

Ever wondered what happens to the body after drinking coffee? Well, we know it provides a much-needed jolt in the early hours – but why? Well, this article will provide these answers and more.


We’ll take a look at coffee’s effect on the brain and body, the time window of its effects, and the proven health benefits.

So grab a fresh cup of Joe and let’s go!

How Coffee affects the Brain

The main reasons people drink coffee are for its alertness, focus, and mood-boosting properties. Here’s the science behind these properties:

  • Certain chemicals within the coffee cross the blood-brain barrier.
  • Chemicals effectively block the activity of adenosine, the neurotransmitter that makes us drowsy.
  • The transmission of dopamine increases, which elevates and improves our mood, and increases alertness.
  • The levels of acetylcholine increase as well, which increases muscle activity.
  • It raises serotonin levels, creating an energetic yet relaxed feeling.

Researchers continue to study the potential long-term benefits of coffee on the brain, including improved memory, protection against age and disease-related brain degeneration, and the reduced risk of depression.

How Coffee Affects the Body

Most people consume java for its neurological benefits. However, the drink also possesses certain properties that improve other functions of the body. Here are some of those benefits:

  • Coffee boosts our metabolic rate, which accelerates the burning of fat.
  • Chemicals within coffee can significantly improve physical performance and strength.
  • Coffee is the single-largest source of antioxidants (disease-fighting compounds) in the world.
  • One cup of coffee contains 11%, 2%, and 6% of the recommended daily allowance (RDA) of vitamins B2, B3, and B5, respectively.
  • Properties within coffee appear to have a protective effect on the liver.
  • Coffee helps to support blood vessel health.

The Time Window of Coffee’s Effects

Let’s put all of this information together and explain what happens from the moment you take your first sip of coffee to the time it exits the body:

  • Within 10 minutes: The caffeine from coffee enters your bloodstream, causing your blood pressure and heart rate to rise.
  • Within 20 minutes: Two of the above-described neurochemical reactions take place. First, caffeine binds to the brain’s chemical adenosine, which neutralizes fatigue while increasing our energy. Dopamine levels then increase, which provides an alert and focused feeling.
  • Within 30 minutes: The adrenal glands kick into high gear and produce more hormones. As a result, our pupils dilate and may sharpen vision for a short time.
  • Within 40 minutes: The body produces more serotonin, which improves the functioning of neurons within the spinal cord called motoneurons. This leads to improved muscle strength and coordination.
  • Within 4 hours: Cellular metabolism increases. Thus, it initiates the expedited burning of energy. The body will break down stored fats as a result. Levels of acid within the stomach increase.
  • Within 6 hours: Caffeine produces a diuretic effect, promoting the act of urination. During this time, approximately half of the caffeine consumed earlier leaves the body. (This is called a drug’s half-life – or the amount of time needed for its chemical presence in the blood to drop to 50%.)

Final Thoughts on the Impact of Coffee

As you can see, coffee possesses many powerful health benefits. Effectively, it improves our mood and relieves boredom. Cognitively, it enhances alertness and focus, and helps with decision-making. Physically, coffee promotes fat-burning and improves muscle coordination and strength.

Perhaps more exciting than the short-term benefits of coffee are the potential benefits in the long run. Accumulating amounts of research continue to demonstrate and espouse the benefits of coffee against cancer, depression, cardiovascular disease, stroke, and other serious ailments.


Furthermore, it’s important to understand that the properties of coffee beans provide most of the abovementioned benefits. Energy drinks, energy “shots,” and many other caffeine-laden products on the market come with high levels of sugar, unnatural chemicals, and preservatives. Additionally, the same applies to canned or bottled coffee.

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