High coffee consumption exceeding five cups daily may be associated with lower bone mineral density in older, postmenopausal women, according to a Flinders University study published in the journal Nutrients.
How Coffee and Tea Impact Postmenopausal Bone Mineral Density
Researchers tracked participants' coffee and tea consumption alongside bone mineral density measurements at the femoral neck and hip areas where osteoporosis-related fractures commonly occur. According to the Flinders University study, drinking tea was associated with higher total hip bone mineral density, while consuming more than five cups of coffee per day was linked to lower bone density. Moderate coffee consumption of about two to three cups daily showed no negative effects on bone health.
Did you know? Approximately one in three women and one in five men aged 50 and older worldwide experience osteoporosis-related fractures, according to the Flinders University research team.
Lifestyle Factors and Dietary Influences on Skeletal Health
Lifestyle variables significantly alter the relationship between daily beverages and bone health. The Flinders University study noted that coffee consumption was associated with lower femoral neck bone mineral density specifically among women with higher alcohol intake. Conversely, the positive association between tea and bone density was more pronounced among women with obesity. Study co-author Ryan Liu told ScienceDaily that catechins abundant in tea may promote bone formation and slow bone breakdown, whereas coffee’s caffeine content can interfere with calcium absorption and bone metabolism in laboratory studies, though Liu noted these effects are small and can be offset by adding milk.
Understanding Osteoporosis Risks and Prevention Strategies
Females encounter an especially elevated vulnerability primarily because they typically possess reduced skeletal mass and undergo rapid skeletal deterioration following menopause. In the United States, the number of adults aged 50 and older with low bone mineral density in the hip or spine is projected to increase by 17.2 million by 2030, according to researchers. Prevention steps outlined by the Mayo Clinic include eating calcium-rich foods like dairy products, leafy greens, and canned fish with bones, obtaining adequate vitamin D, and engaging in regular weight-bearing, strength-training, and balance exercises.
Frequently Asked Questions
Does moderate coffee consumption harm bone health?
No, moderate coffee consumption of about two to three cups a day was not associated with negative effects on bone health in the Flinders University study.

How much caffeine classifies someone as a high consumer?
What are common symptoms of early bone loss?
Indications of declining skeletal density and osteoporosis encompass back discomfort, a reduction in stature as time passes, and a hunched physical alignment, based on findings from the Mayo Clinic.
Can adding milk to coffee offset its effects?
Study co-author Ryan Liu stated that laboratory effects of caffeine on calcium absorption and bone metabolism are small and can be offset by adding milk.
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