Caffeine & the Brain

 

What does caffeine do to the brain or how does it affect it?

 Hands down, caffeine is said to be the most commonly used drug worldwide. It belongs to a class of drugs known as central nervous system (CNS) stimulants. These drugs are designed to treat fatigue and drowsiness. Caffeine peaks in the blood anywhere from 15 minutes to 2 hours after ingestion. Caffeine is able to cross the Blood-Brain Barrier or BBB where it can impact brain functions. Caffeine affects the activity of a naturally occurring and necessary brain substance called adenosine, which is used to transfer energy within the cells by forming molecules like adenosine triphosphate (ATP). Adenosine also functions as a chemical messenger or neurotransmitter adenosine diphosphate (ADP), widening blood vessels, regulating heart rhythm, and promoting drowsiness. A problem often involves what is mixed with caffeine such as large amounts of sugar or artificial sweeteners. More tomorrow.