What are the effects of caffeine on the body?

Caffeine has many effects on the body, including:

  • Stimulating the central nervous system, making you feel more awake and energetic
  • Increasing urination (diuretic effect)
  • Increasing stomach acid production, which can cause heartburn
  • Interfering with calcium absorption
  • Raising blood pressure
  • The effects of caffeine are typically felt within an hour of consumption and can last for 4 to 6 hours.