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Drinking less than 2 cups of tea a day can help to reduce the risk of infertility, while each additional cup can decrease the risk by 27% in females. Additionally, no associations exist between caffeine, coffee consumption, and infertility.
The link between tea, coffee and caffeine consumption and female infertility has been debated for a long time. A new population-based cross-sectional study published in “Reproductive Biology and Endocrinology” investigated this relationship. Hanzhi Zhang and colleagues utilized data of 2099 females from the National Health and Nutrition Examination Survey (NHANES). They used generalized linear models and generalized additive model to find out the dose-response relationship.
As depicted in below Graph 1, it was observed that drinking less than 2 cups of tea a day was linked to a lower risk of infertility. Each additional cup of tea reduced infertility risk by 27%. On the other hand, the investigators did not witness any notable impact from coffee or caffeine on female infertility.
In summary, consuming between 0 and 2 cups of tea per day was associated with a reduced risk of infertility in women. For each extra cup of tea within this range, the risk of infertility decreased by 27%. Conversely, the results showed no significant effect of coffee or total caffeine consumption on infertility risk.
Reproductive Biology and Endocrinology
Association between tea, coffee and caffeine consumption and risk of female infertility: a cross-sectional study
Hanzhi Zhang et. al.
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