Calcium gives you
strength
Your parents were
right when they told you that if you want strong bones and teeth, drink lots of
milk. Well, milk is packed with lots of calcium making this mineral a very
important component in one’s every day diet.
Calcium is the
most abundant mineral in the body and is mostly found in the body’s bones and
teeth. It is an integral part of bone structure, providing a rigid frame that
holds the body upright and serves as attachment points for muscles, making
motion possible. Also, Calcium serves as a calcium bank, offering a readily
available source of the mineral to the body fluids should a drop in blood
calcium occurs.
Calcium’s
major roles in the body
Most of the body’s
calcium is found in bones and teeth where it provides a rigid structure and
strength. Bones are gaining and losing minerals continuously in an ongoing
process of remodelling. Growing children gain more bone than they lose, and
healthy adults maintain a reasonable balance. If calcium intake is inadequate,
blood calcium remains normal, but at the expense of bone loss, which can lead
to osteoporosis
Did you know that
Calcium is not only good for your bones and teeth? (Now you can tell your
parents a thing or two...) Calcium participates in the regulation of muscle
contraction, the clotting of blood, the transmission of nerve impulses, the
secretion of hormones, and the activation of some enzyme reactions.
Calcium may also
protect against hypertension. Some research also suggests protective
relationship between dietary calcium and blood cholesterol, diabetes and colon
cancer.
This mineral may
also play a role in maintaining a healthy body weight. In particular calcium
from dairy foods seems to exert greater effects on body weight than calcium in
supplement form. Notably, calcium intake does not simply reflect a healthy lifestyle;
the relationship remains strong even when factors such as energy intake and
exercise are considered.
Calcium
recommendation and Sources
The recommendations
set for Calcium for adolescents have been set high at 1300milligram daily up to
the age of 18 years old. Between the ages of 19 and 50, recommendations are
lowered to 1000 milligrams a day; for later life, recommendations are raised
again to 1200 milligrams a day to minimize the bone loss that tends to occur
later in life. High intakes of dietary protein and sodium increase calcium
losses, but whether these losses impair bone development remains unclear.
A 1000mg of
Calcium is approximately 3 cups of milk or 5 cups of broccoli or 2 ½ cups
yogurt or 120g cheese or 90g sardines. So you can increase your intake of
calcium by eating a variety of calcium rich food.
Calcium is found
most abundantly in milk and milk products. If you do not prefer drinking milk,
cheese and yogurt are great options. Alternatively, milk and milk products can
be concealed in foods. Powdered fat-free milk can be added to casseroles,
soups, and other mixed dishes during preparation; 5 heaped tablespoons offer
the equivalent amount of a cup of milk.
Calcium is also
found in other food sources. Some nuts (such as almonds), and some seeds (such
as sesame seeds) can also supply calcium.
Among the
vegetables, mustard, turnip greens, kale, parsley and broccoli are good sources
of calcium. Some dark green leafy vegetables, such as spinach appear calcium
rich but actually provide little, if any calcium to the body because of binders
they contain. Eight cups of spinach is six times as much calcium as 1 cup milk.
Oysters are also
good sources of calcium, as are fresh fish eaten with their bones, such as canned
sardines.
Look also out for
calcium fortified cereals and high calcium milk.
Calcium
deficiency
A low calcium
intake during the growing years limits the bones ability to reach their optimal
mass and density. Most people achieve a peak bone mass by their late 20s, and
dense bones best protects against age related bone loss and fractures. All
adults lose bone as they grow older, beginning between the ages of 30s and 40s.
Should bone losses reach a point of causing fractures under common everyday
stresses, the condition is known as osteoporosis. Osteoporosis is silent and
does not have symptoms such as shortness of breath, skin lesion, pain,
tiredness etc; the body sends no signal saying bones are losing calcium, as a result,
their integrity. Blood samples also offer no clues because blood calcium
remains normal regardless bone content. Thus is it important to have a bone
density check routinely.
Article by Charne Herbst - Dieticians At Work
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