Re: NOTMILK -- Dietary Protein Inhibits Bone Growth -- in five-year study
of 757 young girls in Beijing, China, British J of Nutrition 2010 March:
Robert Cohen: Rich Murray 2010.02.27
Saturday, February 27, 2010
----- Original Message -----
From: "cohensmilk1" <cohensmilk1@...>
Sent: Saturday, February 27, 2010 3:07 AM
Subject: NOTMILK -- Dietary Protein Inhibits Bone Growth
Dietary Protein Inhibits Bone Growth
If you are not a vegan, you are not a vegetarian.
Consumption of milk and dairy products represents
the consumption of liquid proteins from the most
abused of farm animals.
Every dairy cow in America suffers the pain of
being separated from her mother at birth.
Every dairy cow in America suffers the pain of
having her sensitive horn buds removed.
Most creatures receive no anaesthesia or post
surgical pain killers. Every cow being milked
in America suffers the ultimate indignity and
pain of slaughter.
The March, 2010 issue of the British Journal of
Nutrition (Mar;103(5):714-23) contains a study
which was designed to assess the association
between protein consumption and bone mass
accrual (BMC) in a 5-year study of 757 pre-pubescent
Chinese girls (average age = 10.1 years).
The authors conclude:
"When protein intake was considered according
to animal or plant food sources, protein from
animal foods, particularly meat, had significant
negative effects on BMC accrual..."
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Br J Nutr. 2010 Mar;103(5):714-23. Epub 2009 Oct 9.
The association between dietary protein intake and bone mass
accretion in pubertal girls with low calcium intakes.
Du X, Department of Food Science and Technology,
University of New South Wales, Sydney, Australia.
Qian Zhang a1 c1,
Guansheng Ma a1, mags@...;
Heather Greenfield a2, heatherg@...;
Research Dairy products in human nutrition;
bone growth and development
(Supported by Dairy R&D Corporation, Nestle Foundation,
Murray Goulburn Cooperative Ltd)
Kun Zhu a2, kathyz@...;
Xueqin Du a2, xdu@...;
PhD student with a project "Calcium and vitamin D status of female
adolescents in Beijing" funded by OPRS and DRDC (1994-1998)
Postdoctoral Research Fellow in the project entitled
"Promotion of bone health in Chinese schoolchildren"
funded by (1998-2001)
One of the Chief Investigators in the project entitled
"Genetic, pubertal and nutritional determinants of peak bone mass
accretion in adolescence" funded by Nestle Foundation (2002-2005)
Leng Huat Foo a2,
Xiaoqi Hu a1
and David R. Fraser a2 davidf@...;
a1 National Institute for Nutrition and Food Safety,
Chinese Centre for Disease Control and Prevention,
Beijing, China 100050
a2 Faculty of Veterinary Science, University of Sydney,
To assess the association between protein intakes and bone mass
accrual in girls, data were analysed for 757 pre-pubertal girls
(mean age 10.1 years) in urban Beijing, China, who participated in a
5-year study including 2 years of milk supplementation
(intervention groups only) and 3 years of follow-up study.
At 0, 12, 24, 48 and 60 months from the baseline, bone mass of the
proximal or distal forearm (PF or DF) and total body (TB) was
measured with dual energy X-ray absorptiometry;
dietary intakes were assessed by a 3-d food record
(including two weekdays and one weekend day).
Linear mixed models were used
and continuous variables were logarithm transformed.
The mean longitudinal Ca intake (432-675 mg/d on average)
positively influenced bone mineral content (BMC) at TB, PF and DF
after controlling for baseline bone mass
and other possible confounders.
However, negative associations were observed between protein intake
(55.9-61.0 g/d on average) and BMC accrual at TB, PF or DF
(beta = - 1.92, - 10.2 or - 4.82, respectively, P < 0.01)
When protein intake was considered according
to animal or plant food sources,
protein from animal foods, particularly meat,
had significant negative effects on BMC accrual at DF or PF
It was concluded that higher protein intake,
especially from animal foods, appeared to have a negative effect on
bone mass accrual in Chinese pubertal girls with low Ca intakes.
FOLLOW UP PROJECT
A new project "Genetic, pubertal and nutritional determinants of
peak bone mass accretion in adolescence" has been funded by the
Nestle Foundation, 2002 - 2005.
This follow-up study is being conducted by the original team in
collaboration with the Institute of Nutrition and Food Safety in Beijing.
The Chinese team also receive funding from Danone-China for this
This project will assess the growth and bone health of a random
sample of ~700 Chinese adolescent girls at ages 14 and 15.
These girls previously completed a milk supplementation trial
on schooldays when they were aged 10-12
(~450 supplemented, 250 unsupplemented controls),
and data are already available on growth and bone health measured at
baseline, mid-trial and end-trial, together with genetic information and
general and health information.
Measurements at ages 14 and 15 will be anthropometry, diet, physical
activity, UV exposure, bone mineral measurements, body composition,
At age 15 additional measurements will be bone age and biochemical
The results will indicate how bone develops in adolescents consuming
a low calcium, plant-based diet (controls) especially the influences of
pubertal progression and genotype.
The results will also indicate whether the benefits to growth and bone
development of short-term milk supplementation commencing in early
puberty will be maintained throughout adolescence.
This information is needed to improve scientific understanding of
growth and bone mineral accretion in adolescent girls, and to make
recommendations about nutrition (including school milk programs)
to the responsible authorities in China.
The project will contribute to development of local nutrition scientists,
as well as school teachers and school health workers.
The follow-up study employs Dr Zhu Kun (Kathy) as Project Officer
and has two new PhD students:
Foo Leng Huat from Malaysia,
and Zhang Qian from Beijing.
stevia approval due end of March by EFSA, Parma, (Europe) -- new
book "Stevia and steviol glycosides" Prof. Jan MC Geuns (Begium)
307p 70 euros: Rich Murray 2010.02.25
Thursday, February 25, 2010
Rich Murray, MA
Boston University Graduate School 1967 psychology,
BS MIT 1964, history and physics,
1943 Otowi Road, Santa Fe, New Mexico 87505
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