Zuivel en botgezondheid.
Geplaatst: 10 okt 2010 01:41
Melk bevat eiwit, calcium, fosfor en vitamine D die belangrijk zijn voor een goede botgezondheid. Toch zijn er (nog steeds) geluiden te horen dat melk juist de botafbraak zou stimuleren. Het argument dat daarvoor wordt gebruikt is dat de eiwitten uit melk een zuurrest hebben waardoor calcium aan de botten onttrokken zou worden om dit te neutraliseren.
Wat zegt de literatuur over de rol van eiwitten in relatie tot botgezondheid?
Concerns about dietary protein increasing urinary calcium appear to be offset by increases in absorption. Likewise, concerns about the impact of protein on acid production appear to be minor compared with the alkalinizing effects of fruits and vegetables. Perhaps more concern should be focused on increasing fruit and vegetable intake rather than reducing protein sources. The issue for public health professionals is whether recommended protein intakes should be increased, given the prevalence of osteoporosis and sarcopenia.
http://www.ajcn.org/cgi/content/full/87/5/1567S
SUMMARY: On the basis of recent findings, consuming protein (including that from meat) higher than current Recommended Dietary Allowance for protein is beneficial to calcium utilization and bone health, especially in the elderly. A high-protein diet with adequate calcium and fruits and vegetables is important for bone health and osteoporosis prevention.
http://www.ncbi.nlm.nih.gov/pubmed/20717017
One sometimes encounters arguments that the protein and sodium of milk somehow negate the potential benefit of its calcium. These speculations are based on the established fact that both protein and sodium lead to increased urinary calcium excretion [160,161]. However, the negative effects of protein and sodium are observed mainly at low calcium intakes, when, with absorption already operating at an individual’s maximum, there is no possibility of increasing calcium extraction from the diet so as to offset an increment in excretory loss.
http://www.jacn.org/cgi/content/full/19/suppl_2/83S
Er zijn ook onderzoeken die laten zien dat zuivelconsumptie in de kinderjaren en adolesentie gepaard gaat met een hogere botdichtheid op latere leeftijd.
This study indicates that the effects of milk consumption in childhood and adolescence on bone density may manifest as higher bone density decades later in menopause.
http://www.ajcn.org/cgi/reprint/42/2/27 ... 20a6de93f4
Conclusions: In growing children, long-term avoidance of cow milk is associated with small stature and poor bone health. This is a major concern that warrants further study.
http://www.ajcn.org/cgi/content/full/76/3/675
Conclusion: Women with low milk intake during childhood and adolescence have less bone mass in adulthood and greater risk of fracture
http://www.ajcn.org/cgi/content/full/77/1/257
Conclusie: melk lijkt niet nadelig te zijn voor de botgezondheid.
Wat zegt de literatuur over de rol van eiwitten in relatie tot botgezondheid?
Concerns about dietary protein increasing urinary calcium appear to be offset by increases in absorption. Likewise, concerns about the impact of protein on acid production appear to be minor compared with the alkalinizing effects of fruits and vegetables. Perhaps more concern should be focused on increasing fruit and vegetable intake rather than reducing protein sources. The issue for public health professionals is whether recommended protein intakes should be increased, given the prevalence of osteoporosis and sarcopenia.
http://www.ajcn.org/cgi/content/full/87/5/1567S
SUMMARY: On the basis of recent findings, consuming protein (including that from meat) higher than current Recommended Dietary Allowance for protein is beneficial to calcium utilization and bone health, especially in the elderly. A high-protein diet with adequate calcium and fruits and vegetables is important for bone health and osteoporosis prevention.
http://www.ncbi.nlm.nih.gov/pubmed/20717017
One sometimes encounters arguments that the protein and sodium of milk somehow negate the potential benefit of its calcium. These speculations are based on the established fact that both protein and sodium lead to increased urinary calcium excretion [160,161]. However, the negative effects of protein and sodium are observed mainly at low calcium intakes, when, with absorption already operating at an individual’s maximum, there is no possibility of increasing calcium extraction from the diet so as to offset an increment in excretory loss.
http://www.jacn.org/cgi/content/full/19/suppl_2/83S
Er zijn ook onderzoeken die laten zien dat zuivelconsumptie in de kinderjaren en adolesentie gepaard gaat met een hogere botdichtheid op latere leeftijd.
This study indicates that the effects of milk consumption in childhood and adolescence on bone density may manifest as higher bone density decades later in menopause.
http://www.ajcn.org/cgi/reprint/42/2/27 ... 20a6de93f4
Conclusions: In growing children, long-term avoidance of cow milk is associated with small stature and poor bone health. This is a major concern that warrants further study.
http://www.ajcn.org/cgi/content/full/76/3/675
Conclusion: Women with low milk intake during childhood and adolescence have less bone mass in adulthood and greater risk of fracture
http://www.ajcn.org/cgi/content/full/77/1/257
Conclusie: melk lijkt niet nadelig te zijn voor de botgezondheid.