One review reports that after participants ingested 37.5–450 mg of caffeine, they had improved alertness, short-term recall, and reaction time ( 1). Drink more water and herbal teas, as well as fruit and vegetable juices. Dilute juices with sparkling water. This is because most studies assess coffee intake without distinguishing between regular and decaf coffee, and some don’t even include decaf coffee.

9 Ways to Get Your Caffeine Fix Without Coffee | Mental Floss

Experiment with herbal teas such as lemongrass, peppermint, ginger, red clover, rosehip, nettle and chamomile.There are other groups of people too who might benefit from giving up caffeine or cutting down. These include pregnant women and those who are looking to start a family, along with migraine and anxiety sufferers. From there, it travels to the liver and is broken down into compounds that can affect the function of various organs.

Caffeine - Zhorn Software Caffeine - Zhorn Software

These side effects include heart palpitations, anxiety, insomnia, and increased blood pressure and heart rate ( 1). Another natural source of caffeine is green tea. It’s an especially popular drink in Asian countries ( 1, 2, 3, 15). This is especially important to watch out for if you tend to experience negative side effects when you consume caffeine. A 2017 study further suggested that the combination of theanine and caffeine in green tea may improve brain function and cognition, as well as reduce anxiety, although more research is needed ( 16).

How much caffeine is safe?

Drinking two or more cups of decaf coffee per day has also been linked with up to a 48% lower risk of developing rectal cancer ( 21, 31, 32). Summary: