
38. Caffeine is a natural stimulant but excessive amounts can cause a lot of damage.
Many foods and drinks contain caffeine, like coffee, tea, cocoa, and chocolate. The Food and Drug Administration (FDA) considers caffeine to be both a drug and food additive, and it is likely to be the world’s most popular stimulant. According to the 2013 online survey conducted by the National Coffee Association, over 587 million coffee cups are drunk per year in the US alone. However, even though caffeine is a popular pick-me-up, there can be detrimental side effects. Because caffeine is a stimulant, it speeds up the central nervous system, making the brain send and receive messages at a faster rate than usual.

Excessive amounts can cause increased body temperature, high blood pressure, dizziness, headaches, heart palpitations, jitters, restlessness, and insomnia. You can find caffeine in many things, from soda beverages to prescription medication. When ingested, it can cause the kidneys to become dehydrated, making them work harder to pump out more fluids. Caffeine also stimulates blood flow, which places additional stress on the kidneys, increasing blood pressure. Though caffeine has many health benefits, such as weight loss, added alertness, higher brain function, and better cognitive thinking, experts say around 200-300 milligrams of caffeine each day is enough. Furthermore, when tracking your caffeine intake, keep in mind that it applies to all foods and drinks that include caffeine – not just coffee.