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 Vegan diet & bones

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Posts : 1279
Join date : 2009-07-26
Age : 53
Location : UK

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PostSubject: Vegan diet & bones   Vegan diet & bones EmptyTue Feb 15, 2011 9:26 am

Here we have another issue that seems to plague vegans. Low vitamin D. I personally think calcium is easy to get enough of, but vitamin D can be more tricky. As a clinical nutritionist I often recommend vitamin D supplementation here in the UK. Most people would do better by taking some.
How much depends upon your situation, but 99% of people would benefit from at least 1,000 IUs of D (I suggest D2, there is a vegan D3 out if you really want it, but most studies show D2 work as well or very nearly so). You can also get extra vitamin D from fortified foods or even putting your mushrooms out into direct sunlight (as they produce D when exposed to UV from the sun!).
So, any person in training, who doesn't expose themselves to sunlight daily (bare skin in the sunlight that is) should probably use a vitamin D supplement (that goes for meat eaters as well as veggies & vegans)

Quote :

Pediatr Endocrinol Diabetes Metab. 2010;16(3):201-4.
The influence of vegan diet on bone mineral density and biochemical bone turnover markers.

Ambroszkiewicz J, Klemarczyk W, Gajewska J, CheĊ‚chowska M, Franek E, Laskowska-Klita T.

Department of Newborn Screening, Institute of Mother and Child, Warsaw, Poland.

INTRODUCTION: Vegetarian diets can be healthy when they are well balanced and if a variety of foods is consumed. However, elimination of animal products from the diet (vegan diets) decreases the intake of some essential nutrients and may influence the bone metabolism. This is especially important in childhood and adolescence, when growth and bone turnover are most intensive. The aim of the study was to assess the effect of vegan diet on bone density (BMD) density and serum concentrations of bone metabolism markers.

MATERIAL AND METHODS: We examined a family on vegan diet which consisted of parents and two children. Dietary constituents were analysed using a nutritional program. Total and regional BMD were measured by dual-energy X-ray absorptiometry. Concentrations of calcium and phosphate in serum obtained from fasting patients were determined by colorimetric methods, 25-hydroxyvitamin D by the chemiluminescence method and bone turnover markers by specific enzyme immunoassays.

RESULTS: In studied vegans, the dietary intake of phosphate was adequate while calcium and vitamin D were below the recommended range. Concentrations of calcium, phosphate and bone turnover markers in the serum of all subjects were within the physiological range, but 25-hydroxyvitamin D level was low. Age-matched Z-score total BMD was between -0.6 and 0.3 in adults, however in children it was lower (-0.9 and -1.0). Z-score BMD lumbar spine (L2-L4) was between -0.9 to -1.9 in parents and -1.5 to -1.7 in children.

CONCLUSIONS: Our results suggest that an inadequate dietary intake of calcium and vitamin D may impair the bone turnover rate and cause a decrease in bone mineral density in vegans. The parameters of bone density and bone metabolism should be monitored in vegans, especially children, in order to prevent bone abnormalities.
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Join date : 2012-08-05

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PostSubject: Re: Vegan diet & bones   Vegan diet & bones EmptyThu Aug 09, 2012 11:45 am

I mostly try to fulfill my requirements of vitamin D without using supplements.
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