However, green tea may bring us undesirable outcomes due to some constituents. Caffeine is one of those substances that is diuretic and reduces the fatigue sensation but the consequences of overconsumption are well proved that it will decrease sleeping duration and worsen sleeping quality by inducing sleeplessness (Suzuki et al., 2012). A study found out that tea intake of university students was significantly linked to sleeping quality (Cheng et al., 2012). However, the types of tea were not investigated. The effect of green tea consumption on sleep quality is still not well documented.
Sleep is very important to our body for relaxation, preparing ourselves for the next day. Unfortunately, poor sleeping quality is prevalent in modern cities such as Hong Kong. An increasing number of university students have stated sleep problems. (Suen, Hon & Tam, 2008). Meerlo, Mistlberger, Jacobs, Heller & McGinty (2009) have reported that prolonged sleep loss may affect the rate of neurogenesis...
... middle of paper ...
...p Medicine Reviews, 12(2), 153-162.
Sereshti, H. & Samadi, S. (2014). A rapid and simple determination of caffeine in teas, coffees and eight beverages. Food Chemistry, 158, 8-13.
Suen, L.K., Hon, K.L. & Tam, W.W. (2008). Association between sleep behavior and sleep-related factors among university students in Hong Kong. Chronobiology International, 25, 760-775.
Suzuki, Y., Miyoshi, N., & Isemura, M. (2012). Health-promoting effects of green tea. Proceedings of the Japan Academy, 88(3), 88-101.
Tseng, H.C., Wang, C., Cheng, S.H., Sun, Z. Chen, P. S., Lee, C., … Yang, Y. (2014). Tea-drinking habit among new university students: Associated factors. Kaohsiung Journal of Medical Sciences, 30, 98-103.
Tsui, Y., & Wing, Y. (2009). A study on the sleep patterns and problems of university business students in Hong Kong. Journal of American College Health, 58(2), 167-176.
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