A ten-year Australian study conducted by Flinders University has revealed a link between excessive coffee consumption and decreased bone density. The correlation is more evident in older women, increasing the risk of fractures. Results showed that consuming more than five cups of coffee per day may be associated with a significant decrease in hip bone density.
According to a report published by “Fox News,” the study observed a limited and consistent positive effect of tea consumption on bone health. Enwu Liu, one of the study’s authors, stated: “Even minor improvements in bone density can translate into fewer fractures across large populations.”
Study Details
The study, published in the scientific nutrition journal “Nutrients,” explained that researchers relied on data from nearly 10,000 women aged 65 and older. Their coffee and tea drinking habits were tracked, and long-term changes in bone mineral density—a key indicator for assessing the risk of osteoporosis—were measured.
The results showed that women who drank tea recorded slightly higher hip bone density compared to non-drinkers. Liu explained that this difference, amounting to about 0.003 g/cm², is equivalent to a slowdown of nearly a full year in age-related bone loss. In contrast, women who consumed very large amounts of coffee recorded a greater decrease in bone density.
Researchers’ Recommendations
Researchers noted that black, green, and decaffeinated teas are rich in flavonoids and catechins that support bone health, recommending consumption without added sugar. They also emphasized that moderate coffee consumption does not pose a risk and that the effect of caffeine on calcium absorption remains limited for those who receive adequate nutritional intake.
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