— RoastedDailyUtah (@roasteddailyut) March 4, 2016
Ten minutes after that first sip of coffee, the subtle but invigorating effects of caffeine kick in, making getting out there and facing the day seem less daunting.
And in a surprising finding, one study found that decaffeinated coffee, which contains only 2 to 3 percent of the caffeine of regular coffee, also contributes (slightly) to a person’s alertness.
You might feel drowsy and incapable of functioning at a high level until the caffeine hits your bloodstream. You may go from 0 to 60 in about 10 minutes, but you hit top speed after about 45 minutes, when 99 percent of the caffeine from your coffee, tea or energy drink has entered the bloodstream fully. Then it takes many hours for the caffeine to dissipate.
These findings were reached by researchers from the University of Barcelona in a study published in December 2008 in the journal Progress in Neuro-Psychopharmacology and Biological Psychiatry. The journal article is not available without paying a fee.
The 10-minute finding contradicted previous studies that showed alertness does not increase until after 30 or 45 minutes, says an articlein Science Daily about the research article.
“Forty-five minutes is the time needed for maximum caffeine concentration to be reached in the blood, but levels reach half this concentration after just a few minutes,” Science Daily reports.
To measure caffeine’s effects on the human body, the researchers analyzed 668 university students, 238 of them male. Their average age was 22. They sampled the levels of caffeine in their blood at 10, 20 and 30 minutes. They took the measurements two times during the day after the students drank coffee, at midday and in the late afternoon, to serve as a control if there were possible differences caused by time of day.
Another surprise finding: Men obtain more of the stimulating effects of caffeine, than women.
The lead researcher, Ana Adan, told Science Daily, “Although both the men and women saw an improvement in their activity levels with the coffee, which increased in later measurements, we observed a greater impact among the males.”
Though the women in the study were less affected by caffeine, they obtained more alertness from the decaffeinated coffee than the men did.
The study says the invigorating effects of decaf gave “a small subjective improvement in the participants’ state of alertness.”
“If a person cannot drink normal coffee, a decaffeinated one might provide some benefits. It remains to be evaluated whether these effects are simply subjective, or if they do have an impact on performance,” Adan told Science Daily.
There are, of course, different ways to ingest caffeine. People who chew caffeinated gum or suck caffeinated mints might find their alertness level increases quickly because the body absorbs the compound quickly through the thin membranes of the mouth. Also, many energy drinks have greatly concentrated amounts of caffeine in a few ounces of liquid, which are drunk quicker than, say, an 8 or 10-ounce cup of hot coffee. The faster the caffeine is consumed, the faster it hits the bloodstream.
Another thing that might affect the rate of caffeine uptake into the bloodstream is the concentration of the chemical in the product being consumed. In other words, some types of coffee and other products contain more caffeine than others, depending on the type of beans it’s made from and the brewing process. So drinking a 6-ounce cup with 100 mg of caffeine may have less of an effect than a 6-ounce cup with 167 mg.
Also, as the Viter Energy Mints Blog wrote before:
When people talk about having “a cup of coffee,” they don’t necessarily mean 8 ounces (236 milliliters). For example, many people go for the large size of coffee at McDonald’s restaurants and Starbucks, at 20 ounces (591 milliliters). Or at home, they may have a 12- to 16-ounce mug.
So when you read guides online that say an 8-ounce cup of drip java has about 163 mg of caffeine, you can more than double the amount of the stimulating chemical for a 20-ounce size. Drip coffee is the kind that drips through a filter to produce that cup or mug of the elixir that so many people say they can’t start their day without.
That Viter Energy Mints Blog explores all about the amounts of caffeine in the many types of coffee. Another of our blogs detailed amounts of caffeine in other products, including chocolate, tea, medicines and energy drinks.
More caffeine, more buzz
The amount of stimulation a person gets from coffee and other caffeinated products varies by the amount of caffeine.
According to a LiveStrong articleabout how long caffeine stays in the system:
Caffeine’s stimulant effect on the central nervous system is dose-dependent; the more caffeine consumed, the stronger the stimulant effect. It blocks a neurotransmitter called adenosine, which is a central nervous system depressant and has a calming, slowing effect on the brain. When adenosine is blocked, the adrenal glands begin secreting adrenaline, which is the chemical associated with the body’s “fight or flight” response. This response is characterized by increases in heart rate, body temperature, blood pressure and blood sugar levels. When caffeine blocks adenosine, it also leads to increased dopamine levels, which are associated with an elevation in mood.
Another thing to keep in mind when consuming caffeine (about 80 percent of American adults do so), is that the chemical’s half-life is about five or six hours. This means about half the coffee you ingested five hours ago is still in your body five hours later.
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The holidays are upon us. It’s only October but with the rate this year has gotten to the tail-end, we’ll all be wearing our favorite sweatshirts (forcibly or otherwise) and devouring the holiday away in no time.
The forward-looking you will already be starting to watch that *extra holiday weight* before the holiday even starts.
But one step at a time, right? After all, there’s a few weeks left before the celebrations and holiday parties officially kick in.
If the java lover in you has ever been curious whether caffeine can help curb the appetite, now is the perfect time to find some answers.
The word on the street is that caffeine is one of the best appetite suppressants.
Spoiler alert: researches tell us the jury’s still out on this one.
Have you been drinking coffee for years and starting to feel weird sensations after a cuppa? You’ve got to know something.
If you suddenly find yourself going through unusual post-caffeine effects such as anxiety, headache, faster heartbeat and tremors, you may be experiencing a shift in how your body metabolizes caffeine.
Two words: caffeine sensitivity.
Caffeine sensitivity is not necessarily a bad thing. Sometimes, it’s all a matter of our body adapting to caffeine in our system.
However, if all of a sudden you start to feel things that didn’t use to happen after having your caffeine fix, then it’s time to watch that caffeine intake!
What if I tell you that aside from perking you up, caffeine can also help you concentrate and become more productive?
If, during mind-numbing, brain-wracking moments, you want to feel like Popeye going for a whole can of spinach, just reach out for the coffee-maker and you’re likely to feel the same! (For the best java experience, know when’s the best time to drink your coffee here.)
Caffeine can also help you absorb information and remember them more efficiently.
Yep! Our favorite stimulant can boost mental performance in more ways than one. Have a cuppa and you’ll find yourself retaining more information from classes and business meetings, kill it in planning and problem-solving, and finish those day-to-day tasks efficiently.
Without further ado, here are 8 ways caffeine can help us take a step closer to becoming Einstein-genius: