What It Is
Caffeine is one of the most commonly used stimulants worldwide and a popular ingredient in weight loss supplements. It is found naturally in coffee, tea, and cocoa.
How It May Help
Caffeine stimulates the central nervous system, increasing alertness and energy expenditure. It promotes fat mobilization by increasing epinephrine levels.
Scientific Evidence
Extensive research supports caffeine role in boosting metabolism and fat oxidation. Studies show caffeine can increase metabolic rate by 3-11%.
Safety & Side Effects
Common side effects include jitteriness, anxiety, insomnia, increased heart rate, and digestive issues. Tolerance develops with regular use.
Who Should Avoid
People with anxiety disorders, heart conditions, high blood pressure, pregnant women, and those sensitive to stimulants.