Tuesday, 29 October 2013

Nutritional Requirements for age of 50 and Over

 It has been recognized for some time that, for health and the normal functioning of the body, humans need to consume foods and drinks that are sources of energy (calories) and which together provide protein and contain a specific range of vitamins, minerals and trace elements. However, awareness is now growing of the provision by foods, especially plant foods, of a wide variety of substances that are yet to be recognized as nutrients as such, but which may confer health-promoting properties. These phytochemicals are represented in nature by various groups of structures that together include 3000-4000 individual compounds, and which possess a number of different properties(1).

Recommended daily intakes for micro nutrients as recommended by the Department of Health DRVs (Dietary Reference Values)(2)
A. Nutrient and                 Recommended daily intake for 50+ years 
1. Calcium (mg)                        700
2. Phosphorus (mg)                  550
3. Magnesium (mg)                   270
4. Sodium (mg)                       1600
5. Potassium (mg)                   3500
6. Chloride (mg)                     2500
7. Iron (mg)                               14.8
8. Zinc (mg)                                 9
9. Copper (mg)                            1.2
10. Selenium (μg)                      60
11. Iodine (μg)                         140
12. Vitamin A (μg)                   600
13. Thiamin (mg)                        0.8
14. Riboflavin (mg)                   1.1
15. Niacin (mg)                       12
16. Vitamin B6 (mg)                  1.2
17. Vitamin B12 (μg)                 1.5
18. Folate (μg)                      200
19. Vitamin C (mg)                 40
20. Vitamin D* (μg)                10

B. Estimated Average Requirements (EARs) for energy
Age (years), Estimated energy requirement for males (kcals per day), Estimated energy requirement for females (kcals per day)
51-59                      2550                                                                        1900
60-64                      2380                                                                        1900
65-74                      2330                                                                        1900
75+                        2100                                                                        1810

C. Proteins
Age (years)   Estimated protein requirement for males (kcals per day)   For females
51+                                            53.3                                                    46.5

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(1) http://bmb.oxfordjournals.org/content/56/1/18.full.pdf
(2) http://www.milk.co.uk/page.aspx?intPageID=116

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