Research suggests that the flavanols, flavonoids, flavandiols, and phenolic acids in tea could offer protection against degenerative diseases. Studies also indicate that green tea may be able to reduce the risk of certain cancers. Some research has also found that green tea could also promote healthier weights in many people.
While there is evidence that green tea may offer strong health benefits, there is also evidence it could cause health issues in certain people. Because the chemical composition of green tea is so complex, experts believe it could have both negative and positive impacts on people’s health; however, more research is needed to confirm this.
Tea catechins can impact iron absorption, particularly in people who are at risk of iron deficiencies. Independent laboratories have also reported that tea quality can vary wildly, depending on the producer, with certain varieties containing toxic heavy metals and very few antioxidants. Due to the manner in which it is grown, green tea has also been found to contain trace levels of arsenic; however, government studies suggest the amounts may be too low to cause health problems.
While there is some evidence that the body is better able to absorb nutrients during sleep, the difference is likely negligible. If you choose to drink tea, you can enjoy the potential benefits at any time of the day or night. Some people experience a calming effect after drinking a warm, cup of tea before bedtime. At the same time, it’s important to choose a tea that is free of sleep-disrupting caffeine. You should also avoid adding sugar to your tea before bedtime, since sugar can promote wakefulness.
