Explain about the dietary calcium requirements, Biology

Assignment Help:

Explain about the Dietary Calcium Requirements?

There are variations in the amount of calcium recommended by different advisory groups. This is mainly due to the different criteria used as the basis for estimating requirements. The factorial approach is the most common one for determining the calcium needs. In this approach, estimates of how much calcium is deposited in the body on a daily basis are made for infants, children and adolescents and for each group and this is added to the endogenous' calcium losses through different routes.

The total of this is converted to dietary calcium by using the fractional absorption rates observed at different life stages. A recent refinement involves the use of mathematical modelling of experimental data from balance studies to estimate the optimal calcium intakes at or above which calcium retention is maximal or desirable. Another approach is to estimate the optimal calcium intake for bone health, in terms of reduced risk of osteoporosis in later life. Lack of quantitative data in support of this approach is a constraint in using it widely, Calcium requirements have been measured by long-term balance studies. With respect to the desirable intake of phosphorus, it is suggested that an elemental Ca:P ratio of 1:l may be maintained in most age groups except in infancy where the ratio suggested is 1 :1.5.


Related Discussions:- Explain about the dietary calcium requirements

Define management of parkinson''s disease, Define Management of Parkinson...

Define Management of Parkinson's Disease - Drug, Feeding and Nutritional Care? There is no cure yet for Parkinson's disease, but its symptoms can be minimized with drug thera

Ordinary share capital, Ordinary share capital This type of Equity fi...

Ordinary share capital This type of Equity finance is raised from the public from the sale of ordinary shares to the shareholders. This finance is presented to limited compan

How old is the universe, How old is the universe? From the analysis of ...

How old is the universe? From the analysis of data collected by the Hubble telescope the age of the universe is estimated to be about 12 billion years.

Does ph affect the enzyme activity, Does pH affect the enzyme activity? ...

Does pH affect the enzyme activity? The concentration of hydrogen ions in solution affects the enzyme activity. Every enzyme has maximal efficiency under an optimum pH. As p

Which mechanism is significant in death of erythrocytes, Of the following, ...

Of the following, which mechanisms are significant in the death of erythrocytes (pron: eh-rith-reh-sites) in human blood? Is it a) Phagocytosis (pron: fag-eh-seh-toe-sis) b)

Regulation of testicular, Normal 0 false false false EN...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

General process of post-hatching growth in insects, General process of post...

General process of post-hatching growth in insects While a young insect hatches out from an egg it is covered by a firm, inflexible, sclerotized cuticle, which because of its

Mm, #questionmmmm

#questionmmmm

Ecology.., examples of pyramid of energy

examples of pyramid of energy

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd