Caffeine bones , tea report
What are the caffeine bones, tea connections? Consuming
caffeinated beverages has long been listed as an Osteopeniaand
Osteoporosis risk. But recent research questions whether the usual
connection always exist.
Could it be that tea drinking prevents Osteoporosis?
Here are some intriguing reports about caffeine bones and tea:
- An article in The American Journal of Clinical Nutrition published in 2000 stated that the tea may be beneficial to keeping bones strong.
a study done at University of Cambridge, England examined the tea
drinking habits and bone densities of over 1200 British women age 65 -
75. The researchers found that "tea drinkers among the 1200 women age
had stronger bones than" non-tea drinkers." Tea-drinkers had a
5 percent higher mean bone-mineral density than non-tea-drinkers. Such
a difference in bone density "could mean a 10 percent to 15 percent
decline in fracture risk". The researchers said that they did not
know the reason for these outcomes. Some wondered if there were
something different about tea that counteracted the usually negative
effect of caffeine on bone density.Of course most older British
women drink 'white tea', tea made white by the amount of milk added.
Also, 'having a cup of tea' is a well known cultural 'stress reducing'
practice. I can not tell you how often I have been counseled to go
home and enjoy a 'good cup of tea' after a stressful day
- Another study about caffeine bones, tea that comes from China concluded
that "habitual tea consumption, especially for more than 10 years, has
significant beneficial effects on BMD of the total body, lumbar spine,
and hip regions in adults."
- In October 2007, a study reported that among 500 elderly women
that In their cross-sectional analysis of a 4 year study, total hip BMD
was 2.8% greater in tea drinkers than in non-tea drinkers. Now this is not to say that these elderly women increased
their BMD over the time of the study. The 2.8% more was really from
how much less bone loss the tea drinkers in the study had as compared
with the non teadrinkers. "In the prospective analysis over 4 y, tea
drinkers lost an average of 1.6% of their total hip aBMD (-32; -45, -19
mg/cm(2)), but non-tea drinkers lost 4.0% (-13; -20, -5 mg/cm(2)) (P
< 0.05). The study concluded that tea drinking is associated with
preservation of hip structure in elderly women. You can read the
complete study at Caffeine, bones, tea
SPECIAL NOTE about herb teas.
Some researchers think that it is polyphenols that are responsible for the better bone density among older women. If this is the case, then many herb teas would not offer the same results because many do not contain any polyphenols at all.
There are other studies that conclude that the effect of tea on bone
mineral density is small and does not significantlyaffect the risk of
fractures. ("Habitual Tea Consumption and Risk of Osteoporosis: A
Prospective Study in the Women’s Health Initiative Observational Cohort"
by Z. Chen1 , M. B. Pettinger2, C. Ritenbaugh3, A. Z. LaCroix2, J.
Robbins4, B. J. Caan5, D. H. Barad6 and I. A. Hakim1.)
Linus Pauling Institute also offers some studies related to caffeine
bones and tea. The institute reports that " two large prospective
cohort studies of U.S. women found no relationship between tea
consumption and the risk of hip or wrist fracture over 4-6 years of
follow up (44, 45).
The most recent of these studies found that
higher tea intakes were associated with slightly higher BMD in post
menopausal women, but this finding did not translate into a lower risk
of hip or wrist fracture (44). Further study is required to determine
whether tea consumption affects the development of osteoporosis or the
risk of osteoporotic fracture in a meaningful way."
meantime some women concerned about the Caffeine, Bones, tea connection
are substituting 'tea breaks' as relaxing stress relievers for coffee
breaks which when taken at a coffee bars, often contain caffeine
equivalent to that found in 3 - 4 regular cups of coffee.
Go the the main discussion of caffeine bones or go to Osteopenia treatments