What Happens in Your Body After the First Sip of Coffee? A Moment-by-Moment Story

Tuesday, December 17, 2024  Read time3 min

SAEDNEWS: For many people, drinking coffee in the morning is an important and inseparable part of their daily routine. But have you ever wondered what exactly happens in your body after you take the first sip of coffee?

What Happens in Your Body After the First Sip of Coffee? A Moment-by-Moment Story

According to SAEDNEWS, In the first 10 minutes…
Coffee starts affecting your body just 10 minutes after your first sip, indicating the speed at which caffeine is absorbed into your bloodstream through parts of the digestive system.

A small amount of caffeine is absorbed through the mouth and stomach, but most of it is absorbed in the intestines.

Once the caffeine from coffee enters your body, you start feeling the energy boost you desire.

However, this "energy boost" can be misleading. In reality, caffeine doesn't create energy in your body.

Coffee works primarily by blocking the interaction between your body and adenosine (a chemical that causes fatigue).

Caffeine works in this way because its chemical structure resembles adenosine, and it fits into the adenosine receptors in your body like a key in a lock.

After 20 minutes…

After 20 minutes…

The blocking of adenosine receptors by caffeine doesn’t just reduce drowsiness.

It is also believed that this effect, within half an hour of drinking coffee, causes an increase in blood pressure, with effects lasting nearly four hours.

This increase in blood pressure is due to the constriction of blood vessels caused by caffeine, which leads to an increase in heart rate.

Although this effect is temporary, experts have warned that drinking more than four cups of coffee per day may increase your blood pressure in the long term.

After 45 minutes…

After 45 minutes…

The effect of caffeine on your body peaks after 45 minutes.

The stimulating effect of coffee increases your heart rate and enhances feelings of energy, focus, and memory.

However, excessive coffee consumption can have harmful effects.

Consuming too much caffeine, instead of helping you focus, can lead to feelings of irritability or anxiety.

Around 400 milligrams of caffeine (equivalent to about four regular cups) per day is considered safe for adults.

Pregnant women are advised to consume no more than about two cups of coffee per day, and the recommended caffeine intake for teenagers is around 100 milligrams per day.

After 60 minutes…

After 60 minutes…

Once the stimulating effect of caffeine kicks in, you might notice an unwanted side effect.

When caffeine enters your bloodstream, it takes on a diuretic effect.

When you drink coffee, the caffeine inhibits the production of antidiuretic hormone (ADH), which usually helps regulate the body's water levels.

However, to experience dehydration, you would need to drink a large amount of coffee. This causes the kidneys to stop absorbing water, leading to an increased production of urine.

Research has shown that for coffee to affect your hydration levels, you need to drink more than 500 milligrams of caffeine per day, or more than five cups of coffee.

A 2014 study by the School of Sport at the University of Birmingham found no evidence of dehydration from moderate coffee consumption throughout the day.

However, drinking coffee not only makes you urinate more, but you might also notice an increase in the frequency of bowel movements.

Studies have shown that coffee can stimulate contractions in the large intestine and internal muscles.

After 90 minutes and beyond…

After 90 minutes and beyond…

The duration of caffeine metabolism varies from person to person.

For most people, one or two hours after drinking the first sip of coffee, the stimulating effects and diuretic effects begin to wear off.

However, a reduction in the effects of coffee doesn't mean caffeine is completely out of your system.

For most people, caffeine levels in the body decrease by half after six hours. So, while the effects of drinking coffee may diminish after one or two hours, there will still be a significant amount of caffeine in your system. As a result, caffeine can stay in your body for up to 12 hours.

Many experts recommend avoiding caffeine at least eight hours before bedtime to prevent it from interfering with your sleep.


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