Caffeine has the ability to block the brain-signaling molecule adenosine. This causes a relative increase in other signaling molecules. Such as dopamine and norepinephrine body.
This change in brain messaging is thought to benefit your mood and brain function.
One review reports that after participants ingested 37.5–450 mg of caffeine. They had improved alertness, short-term recall, and reaction time UFABET
In addition, a study linked drinking 2–3 cups of caffeinated coffee (providing about 200–300 mg caffeine) per day to a 45% lower risk of suicide.
Another study reported a 13% lower risk of depression in caffeine consumers.
When it comes to mood, more caffeine isn’t necessarily better.
A study found that a second cup of coffee produced no further benefits unless it was consumed at least 8 hours after the first cup.
Drinking between 3–5 cups of coffee per day or more than 3 cups of tea per day may also reduce the risk of brain diseases such as Alzheimer’s and Parkinson’s by 28–60%
It’s important to note that coffee and tea contain other bioactive compounds (besides caffeine) that may also be beneficial.
Caffeine may improve mood, decrease the likelihood of depression, stimulate brain function, and protect against Alzheimer’s and Parkinson’s disease.
Because of its ability to stimulate the central nervous system, caffeine may increase metabolism by up to 11% and fat burning by up to 13%.
Practically speaking, consuming 300 mg per day may allow you to burn an extra 79 calories daily.
This amount may seem small, but it’s similar to the calorie excess responsible for the average yearly weight gain of 2.2 pounds (1 kg) in Americans.
However, a 12-year study on caffeine and weight gain noted that. The participants who drank the most coffee were, on average. Only 0.8–1.1 pounds (0.4–0.5 kg) lighter at the end of the study.