In a long decade of observation, researchers in Adelaide have followed nearly ten thousand women past the age of sixty-five, watching not only what they drank but how their bones held up beneath the years. Their quiet finding is that tea sits slightly in favor of hip density, while coffee, taken in moderation, leaves the skeleton unharmed and only in heavy measure seems to weigh it down, most of all when alcohol joins the cup. Such threads of association, honest in their modesty, remind us that the body keeps its own accounts slowly, and that the older commonplaces of calcium and sunlight stil
Tea Linked to Slightly Stronger Hips in Older Women; Heavy Coffee Intake Tied to Lower Bone Density
Moderate coffee appears safe, while very high intake may not be ideal
Mark
So what did the study actually find?
Mimi
Across almost 10,000 women aged 65 and over, tea drinkers had slightly higher total hip bone density. Women drinking more than five cups of coffee a day had lower density.
Mark
And moderate coffee?
Mimi
Two to three cups a day wasn't linked to any harm.
Luke
Before anyone swaps their coffee for tea, how big is the tea effect?
Mimi
Small. It was statistically significant, but the researchers call it modest.
Luke
And it's an association, not proof that tea strengthens bones.
Mimi
Right. The authors say plainly that the study doesn't show tea strengthens bones or that heavy coffee causes bone loss.
Mark
What about alcohol?
Mimi
The coffee-and-lower-density link was stronger in women with higher lifetime alcohol consumption, so heavy coffee drinkers who also drink may be the group to think about.
Luke
The explanations, catechins in tea and caffeine's effect on calcium, are offered as possibilities. The caffeine evidence comes from lab studies, and the effect is described as small and offset by milk.
Mark
So what's the takeaway?
Mimi
Moderation, and keep up calcium and vitamin D. Nobody needs to give up coffee.
O Pulso
- A decade-long study of nearly 10,000 women over 65 has stirred fresh questions about the everyday cups that fill their mornings.
- Tea drinkers show slightly higher hip bone density, a small gap that researchers say is real but far from dramatic.
- Coffee drinkers at two to three cups a day show no measurable harm, while intake above five cups tilts density downward.
- Heavy alcohol use magnifies the coffee effect, sharpening the warning for women who drink both regularly.
- Researchers stress this is association, not proof, and urge calcium and vitamin D as the true anchors of bone health.
In a long decade of observation, researchers in Adelaide have followed nearly ten thousand women past the age of sixty-five, watching not only what they drank but how their bones held up beneath the years. Their quiet finding is that tea sits slightly in favor of hip density, while coffee, taken in moderation, leaves the skeleton unharmed and only in heavy measure seems to weigh it down, most of all when alcohol joins the cup. Such threads of association, honest in their modesty, remind us that the body keeps its own accounts slowly, and that the older commonplaces of calcium and sunlight still hold the foundation.
Researchers at Flinders University in Adelaide set out to learn whether the coffee and tea habits of older women might show up in their bones. They followed nearly 10,000 women, all aged 65 or older, over a decade, tracking what they drank again and again rather than asking once. The team measured bone density at the hip and femoral neck, two sites closely linked to fracture risk, and watched how those measures shifted across the years.
Tea came out slightly ahead. Women who drank it had somewhat higher density at the total hip, a difference that was small but statistically significant. Adjunct Associate Professor Enwu Liu noted that even modest gains could mean fewer fractures when multiplied across large populations.
Coffee told a more layered story. Two to three cups a day caused no visible harm, while more than five cups was linked to lower density, especially among women who also drank heavily over their lives. Ryan Yan Liu offered possible explanations: catechins in tea may support bone formation, and caffeine may subtly affect calcium absorption, effects that milk can offset. The authors were clear that these are associations, not proof of cause.
The practical message for older women is moderation. A daily cup of tea may offer a small benefit, moderate coffee appears safe, and very high intake deserves a second look. Calcium and vitamin D remain the cornerstones.
Researchers at Flinders University in Adelaide have looked at what nearly 10,000 older women drank over a decade, and what happened to their bones. The women were all 65 or older. The team, based at the university's College of Medicine and Public Health, wanted to know whether coffee and tea habits were linked to changes in bone mineral density, a key measure of osteoporosis risk.
The paper is titled 'Longitudinal Association of Coffee and Tea Consumption with Bone Mineral Density in Older Women: A 10-Year Repeated-Measures Analysis in the Study of Osteoporotic Fractures.' Ryan Yan Liu and Enwu Liu wrote it, and it appeared in the journal Nutrients in November 2025.
The analysis drew on data from the Study of Osteoporotic Fractures. Participants' coffee and tea consumption was tracked repeatedly rather than recorded once. Bone mineral density was measured at the hip and the femoral neck, two sites closely tied to fracture risk. The researchers also used advanced imaging to follow how density changed over time.
Tea came out slightly ahead. Women who drank it had somewhat higher bone mineral density at the total hip than women who did not. The difference was small, but it was statistically significant. Adjunct Associate Professor Enwu Liu said that even modest gains in density could translate into fewer fractures when considered across large populations.
Coffee told a more complicated story. Women who drank about two to three cups a day showed no sign of harm to their bones. Those who drank more than five cups daily had lower density. Lifestyle played a part too: the negative link between coffee and bone density was stronger among women with higher lifetime alcohol consumption.
Ryan Yan Liu offered possible explanations, though the study does not prove them. Tea contains catechins, compounds that may support bone formation and slow bone breakdown. Caffeine, meanwhile, has been shown in laboratory studies to affect calcium absorption and bone metabolism. Those effects are small, he noted, and can be offset by adding milk.
The researchers were careful about what the findings mean. They do not show that coffee is inherently bad for bones, nor that tea prevents osteoporosis. They also do not show that tea strengthens bones or that heavy coffee drinking directly causes bone loss; this is an association. The differences were modest, and the team said they were not large enough to justify major changes in individual habits.
For older women, the practical message is moderation rather than choosing one drink over the other. Moderate coffee appears safe, while very high intake may not be ideal, particularly for women who also drink alcohol. A daily cup of tea may offer a small potential benefit. Calcium and vitamin D, the researchers stress, remain the cornerstones of bone health.
Citações Notáveis
Even small improvements in bone density could potentially translate into fewer fractures when considered across large populations.— Adjunct Associate Professor Enwu Liu
Tea contains catechins that may support bone formation and slow bone breakdown, while caffeine's effects on calcium are small and can be offset by milk.— Ryan Yan Liu, co-author (paraphrased)
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Leia o original em The Economic Times ↗
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