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High Blood Cholesterol
Cholesterol, a yellowish fatty substance, is one of the essential
ingredients of the body. Although it is essential to life, it has a bad
reputation, being a major villain in heart disease. Every person with a high
blood cholesterol is regarded as a potential candidate for heart attack, a
stroke or high blood pressure. Cholesterol is a building block of the outer
membrane of cells. It is the principal ingredient in the digestive juice bile,
in the fatty sheaths that insulate nerves and in sex hormones, namely,
estrogen and androgen. It performs several functions such as transportation of
fat, providing defense mechanism, protecting red blood cells and muscular
membrane of the body. Most of the cholesterol found in the body is produced in
the liver. However, about 20 to 30 percent generally comes from the foods we
eat. Some cholesterol is also secreted into the intestinal tract in bile and
becomes mixed with the dietary cholesterol.
The percentage of ingested cholesterol absorbed seemed to average 40 to 50
percent of the intake. The body excretes extra cholesterol from the system
through bowels and kidneys. The amount of cholesterol is measured in
milligrams per 100 millimeters of blood. Normal level of cholesterol varies
between 150- 250 mg. per 100 ml. Persons with atherosclerosis have uniformly
high blood cholesterol usually above 250 mg. per 100 ml. In blood, cholesterol
is bound to certain proteins - lipoproteins which have an affinity for blood
fats, known as lipids. There are two main types of lipoproteins : a low
density one (LDL) and a high density one (HDL).
The low density lipoprotein is the one which is considered harmful and is
associated with cholesterol deposits in blood vessels. The higher the ratio of
LDL to the total cholesterol, the greater the risk of arterial damage and
heart disease. The HDL on the other hand plays a salutary role by helping
remove cholesterol from circulation and thereby reduce the risk of heart
disease. Cholesterol has been the subject of extensive study by researchers
since 1769, when French chemist, Polutier de La Salle purified the
soapy-looking yellowish substance. The results of the most comprehensive
research study, commissioned by the National Heart and Lung Institute of the
U.S.A. were announced about four years ago.
The 10-year study, considered most elaborate and most expensive research
project in medical history, indicates that heart disease is directly linked to
the level of cholesterol in the blood and that lowering cholesterol
significantly reduces the incidence of heart attacks. It has been estimated
that for every one per cent reduction in cholesterol, there is a decrease in
the risk of heart attack by two per cent.
Causes
Hyperchjolsterolaemia or increase in cholestrol is mainly a digestive
problem caused by rich foods such as fried foods, excessive consumption of
milk and its products like ghee,butter and cream,white flour, sugar, cakes,
pastries, biscuits, cheese, ice cream as well as non-vegetarian foods like
meat, fish and eggs. Other causes of increase in cholesterol are irregularity
in habits, smoking and drinking alcohol. Stress has been found to be a major
cause of increased level of cholesterol. Adrenaline and cortison are both
released in the body under stress. This, in turn, produces a fat metabolising
reaction. Adrenal glands of executive type aggressive persons produce more
adrenaline than the easy going men. Consequently they suffer six to eight
times more heart attacks than the relaxed men.
The Cure
To reduce the risk of heart disease, it is essential to lower the level of
LDL and increase the level of HDL. This can be achieved by improving the diet
and changing the life style. Diet is the most important factor. As a first
step, foods rich in cholesterol and saturated fats, which lead to increase in
LDL level, should be reduced to the minimum. Cholesterol -rich foods are eggs,
organ meats and most cheese, butter, bacon, beef, whole milk, virtually all
foods of animal origin as well as two vegetable oils, namely coconut and palm,
are high in saturated fats and these should be replaced by polyunsaturated
fats such as corn, safflower, sobayeans and sesame oils which tend to lower
the level of LDL.
There are monosaturated fats such as olive and peanut oils which have more
or less neutral effect on the LDL level. The American Heart Association
recommends that men should restrict themselves to 300 mg. of cholesterol a day
and women to 275 mg. It also prescribes that fat should not make up more than
30 per cent of the diet and not more than one third of this should be
saturated. The Association, however, urges a somewhat strict regimen for those
who already have elevated levels of cholesterol. The amount of fibre in the
diet also influences the cholesterol levels and LDL cholesterol can be lowered
by taking diets rich in fibres. The most significant sources of dietary fibre
are unprocessed wheat bran, whole cereals such as wheat , rice, barley, rye;
legumes such as potato, carrot, beet and turnips; fruits like mango and guava
and green vegetables such as cabbage,
lady’s finger, lettuce and celery. Oat bran is especially beneficial in
lowering LDL cholesterol. Lecithin, also a fatty food substance and the most
abundant of the phospholipids, is highly beneficial in case of increase in
cholesterol level. It has the ability to break up cholesterol into small
particles which can be easily handled by the system. With sufficient intake of
lecithin, cholesterol cannot build up against the walls of the arteries and
veins. It also increases the production of bile acids made from cholesterol,
thereby reducing its amount in the blood. Egg yolk, vegetable oils, whole
grain cereals, soyabeans and unpasteurised milk are rich sources of lecithin.
The cells of the body are also capable of synthesizing it as needed, if
several of the B vitamins are present. Diets high in vitamin B6, cholin and
inositol supplied by wheat germ, yeast, or B vitamins extracted from bran have
been particularly effective in reducing blood cholesterol. Sometimes vitamin E
elevates blood lecithin and reduces cholesterol presumably by preventing the
essential fatty acids from being destroyed by oxygen. Persons with high blood
cholesterol level should drink at least eight to 10 glasses of water every day
as regular drinking of water stimulates the excretory activity of the skin and
kidneys. This in turn facilitates elimination of excessive cholesterol from
the system. Regularly drinking of coriander (dhania) water also helps lower
blood cholesterol as it is a good diuretic and stimulates the kidneys. It is
prepared by boiling dry seeds of coriander and straining the decoction after
cooling. Regular exercise also plays an important role in lowering LDL
cholesterol and in raising the level of protective HDL. It also promotes
circulation and helps maintain the blood flow to every part of the body.
Jogging or brisk walking, swimming, bicycling and playing badminton are
excellent forms of exercise. Yogasnas are highly beneficial as they help
increase perspiratory activity and stimulate sebaceous glands to effectively
secrete accumulated or excess cholesterol from the muscular tissue. Asanas
like ardhamatsyaendrasana, shalabhasana, padmasanaand vajrasana are useful in
lowering blood cholesterol by increasing systemic activity. Hydrotherapy can
be successfully employed in reducing excess cholesterol. Cold hip baths for 10
minutes taken twice every day have proved beneficial. Steam baths are also
helpful except in patients suffering from hypertension and other circulatory
disorders. Mud packs, applied over the abdomen improve digestion and
assimilation. They improve the functioning of the liver and other digestive
organs and activate kidneys and the intestines to promote better excretion.
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