Viatamin D

High quality vitamins, minerals,
herbal, amino acids, diabetessupplements,
high-blood pressure,
weight-loss, laxative, enzymes
supplements at a discount price.
Available to International customers.
TO ORDER, VISIT
http://www.bestnutrition.com
http://www.nutritionbest.com

VITAMIN D

DESCRIPTION

Vitamin D is called the “sunshine vitamin.” There are two types of vitamin D. Cholecalciferol, or vitamin D3, is found in animal liver oils and is produced in our bodies by the effect of sunlight upon cholesterol-derived substances in the skin. Ergocalciferol, or vitamin D2, is produced when ultraviolet light affects the precursor ergosterol (the “vegetarian” form of vitamin D). Vitamin D is stored in the liver and is fat-soluble. Children need more vitamin D than adults.

In the 17th century, the smog and naturally overcast English weather caused many children to develop rickets (twisted, malformed limbs). Rickets became known as “the English disease.”

The most important role played by vitamin D is in bone development. It works by being converted to a hormone, which controls calcium absorption and in turn affects bone development. This is why children have a higher requirement for vitamin D than adults.

Vitamin D is also essential for the development of strong, healthy teeth.

DEFICIENCY SYMPTOMS

In children, rickets (“knock-knees”) can develop with inadequate intake of active vitamin D precursors in conjunction with inadequate exposure to ultraviolet radiation.  There may be delayed development of teeth and malformation of the limbs with an impairment of posture.  In adults, osteomalacia may develop, causing brittle bones, bone pain and muscular spasms.

Therapeutic uses

•     prevention and treatment of rickets in children with inadequate exposure to sunlight

•     prevention and treatment of osteomalacia in adults

Those Who may need to supplement

•     vegetarians and vegans, because vitamin D is found mostly in animal products

•     elderly or housebound people, who are also unlikely to have sufficient exposure to the sun

•     women who have had a series of pregnancies and as a result become short of calcium

•     breast-feeding women whose milk may be short of vitamin D, especially during winter

DIETARY REFERENCE INTAKE

Age                                     Vitamin D (mcg/day)

0-6 months……………………………………………………   5

6-12 months…………………………………………………   5

1-3 years……………………………………………………….   5

4-8 years……………………………………………………….   5

9-13 years (males)………………………………………..   5

14-18 years (males)……………………………………..   5

19-30 years (males)……………………………………..   5

31-50 years (males)……………………………………..   5

51-70 years (males)…………………………………….. 10

71+ (males)………………………………………………….. 10

9-13 years (female)………………………………………   5

14-18 years (females)…………………………………..   5

19-30 years (females)…………………………………..   5

31-50 years (females)…………………………………..   5

51-70 years (females)………………………………….. 10

71+ years (females)…………………………………….. 10

Pregnancy……………………………………………………..   *

Lactation, 0-6 months………………………………….   *

Lactation, 6-12 months………………………………..   *

* Same as other women of same age.

Best food sources

Food                                  Vitamin D (mcg/100g)

cod liver oil……………………………………………….. 212.5

herring and kipper…………………………………….. 22.4

salmon, canned…………………………………………. 12.5

milk, evaporated………………………………………….. 4.0

eggs……………………………………………………………….. 1.6

butter…………………………………………………………….. 0.8

liver……………………………………………………………….. 0.82

cheese, cheddar……………………………………………. 0.3

milk, whole*…………………………………………………. 0.03

milk, skimmed*……………………………………………. 0

*unfortified

SAFETY

Vitamin D may have the highest potential of toxicity of all the vitamins, so care must be taken not to exceed the recommended guidelines. However, vitamin D is safe up to five times the recommended amount. Too much vitamin D may have a deleterious effect on the kidneys, heart and lungs.

INTERACTIONS & CONTRAINDICATIONS

Vitamin D is important for the absorption of calcium and phosphate. Although vitamins A and D are often found together, they are not, in fact, co-dependent. Some cardiac drugs when taken with vitamin D may cause irregular heart rhythm, so consult your medical doctor for appropriate supervision.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: