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06.07.2017

Yoghurt is better weapon against osteoporosis than milk

Yoghurt and supplements containing extra vitamin D protect against osteoporosis; milk and cheese do not. That is the remarkable conclusion of an Irish epidemiological study that researchers at Trinity College Dublin will publish soon in Osteoporos International.

Study
The researchers used data from 4,310 people over the age of 60, who took part in the Trinity Ulster Department of Agriculture (TUDA) aging cohort study. The TUDA study is mapping the lifestyle factors that keep people healthy as they age.

The researchers had information on the participants' diet and they also had scans that showed the state of the participants' bone mass.

Results
The use of supplements containing vitamin D was the strongest protection factor against osteoporosis that the researchers found. In second place came yoghurt. Men and women who ate yoghurt every day were 52 and 39 percent less likely respectively to develop osteoporosis than men and women who ate no yoghurt.

Milk and cheese offered no protection.

Mechanism
"A number of potential mechanisms may explain the observed positive associations," the researchers speculate. "Yogurt naturally contains significant concentrations of bone promoting minerals and vitamins which have also been associated with improved frailty measures."

"In data from the Framingham Heart Study offspring cohort, yogurt consumers were 47 and 55% less likely to have inadequate intakes of vitamins B2 and B12, respectively [Nutr Res. 2013 Jan;33(1):18-26.], while in 2797 Italian adults (aged 18-97 years), yogurt consumers were more likely to have adequate intakes of vitamins and minerals compared to nonconsumers [Int J Food Sci Nutr. 2016;67(3):232-8.]."

"Yogurt also contains significant quantities of protein, bioactive peptides, and biocultures which have been associated with bone health and immunological benefits [ScientificWorldJournal. 2014 Jan 22;2014:595962.] [Biomed Res Int. 2015;2015:897639.] [Ann Nutr Metab. 2004;48(4):228-34.] [PLoS One. 2015 Dec 10;10(12):e0144231.]."

"Furthermore, in a recent review, it was suggested that the modifiable nature of the gut microbiome could provide a potential therapeutic target to intervene in musculoskeletal conditions of aging [J Bone Miner Res. 2016 Feb;31(2):261-9.]. It is perhaps this unique combination of macro- and micronutrients with bioactive compounds within yogurt that confers bone promotion and improved physical function."

Conclusion
"The findings provide evidence that lower frequency of yogurt intake is significantly associated with a lower bone mass density and that improving yogurt intakes could be a valuable and cost-effective health measure for maintaining bone health and in reducing frailty in older adults," concluded the researchers.

"Future randomized controlled trials are required to assess and investigate the efficacy of such approaches."

Source:
Osteoporos Int. 2017 May 1. doi: 10.1007/s00198-017-4049-5. [Epub ahead of print].

More:
For strong bones you need to do fitness training at least twice a week 08.07.2013
Heavy strength training increases bone mass in osteoporosis sufferers 30.03.2013
Two glasses of soya milk a day maintains bone mass 04.02.2010

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