Caffeine is a natural stimulant that can boost metabolism and decrease levels of hunger hormones, which could prevent weight gain. Here are some details about caffeine and its effects on metabolism:
Positive effects:
- Caffeine increases your metabolic rate, which means it increases the rate at which you burn calories at rest, also known as resting metabolic rate (RMR) .
- Caffeine promotes the release of fatty acids from fat tissue by raising blood levels of epinephrine (adrenaline) .
- Caffeine can increase RMR by 3–11%, with larger doses having a greater effect.
- Regular caffeine intake may improve body weight maintenance and weight loss.
- Caffeine stimulates the sympathetic nervous system, which plays a role in suppressing hunger, enhancing satiety, and increasing the breakdown of fat cells to be used for energy.
- Caffeine can acutely enhance various aspects of exercise performance.
Negative effects:
- Large doses of caffeine may be required to significantly influence metabolism.
- The effect of caffeine on metabolism is less pronounced in those who are obese.
- The effect of caffeine on metabolism appears to decrease with age and is greater in younger individuals.
- Additional calories obtained from cream, milk, or sweetener added to a caffeinated beverage like coffee or tea can easily negate any calorie deficit caused by caffeine.
- Caffeine can make you feel anxious and have difficulty sleeping in large doses.
Ingredients or materials:
- Caffeine is a drug that stimulates (increases the activity of) your brain and nervous system.
- Caffeine is naturally found in the leaves and fruits of some plants, and it is in coffee, black and green tea, cocoa, cola soft drinks, and energy drinks.
- Guarana, a popular additive in energy drinks, is also a natural source of caffeine.
In summary, caffeine can increase metabolism and promote weight loss, but large doses may be required to significantly influence metabolism. Caffeine can also have negative effects, such as making you feel anxious and have difficulty sleeping in large doses. Caffeine is a drug that is naturally found in some plants and is in many drinks and foods.
