Green Tea the Benefits of Health Over the past 15–20 years, a number of other research studies have been conducted to determine what health benefits can be attributed to consumption of green tea and its extracts. This research has shown that green tea has a variety of potential health benefits. These benefits include anticarcinogenic, anti-inflammatory, antimicrobial, and antioxidant properties, and benefits in cardiovascular disease and oral health. While much of this research has been performed in vitro, and a significant amount of the research done in vivo, using animal models, this will focus mainly on studies conducted with human subjects plus pertinent information from the other types of studies. Anticarcinogenic Properties of Green Tea Cancer is currently a major source of morbidity and mortality worldwide. Billions of dollars in research monies have been poured into cancer research over the past 50 plus years, and yet we do not se...
Aloe Vera Plant in medicine
For centuries, Aloe Vera has been
used by many different cultures. The ancient Greeks, the Romans, the
Babylonians, Indians and the Chinese have all used Aloe Vera as a medicinal
plant. One of the common experimental cancer models is sarcoma-180.When Aloe
was administered to mice bearing S-180 tumors, the tumor growth was inhibited.
Aloe vera is a dietary supplement and not a regulated drug. There is no
guarantee of strength, purity, or safety of these products. Aloe vera is
approved by the Food and Drug Administration as a food additive for flavor.
Aloe
Vera has been used by many different cultures. The ancient Greeks, the Romans,
the Babylonians, Indians and the Chinese have all used Aloe Vera as a medicinal
plant. Throughout the years, Aloe Vera (Aloinae) has been called many things:
Potted Physician, Wand of Heaven, Wonder Plant, Heaven’s Blessing, and Plant of
Life.
Botanists have identified at least
200-300 different types of Aloe Vera plants. Of all these types of Aloe, only
five have demonstrated medical benefits: Aloe Barbadensis Miller, Aloe Perryi
Baker, Aloe Ferox, Aloe Arborescens and Aloe Saponaria. Aloe Barbadensis Miller
is the most widely used as well as the most potent.
Indigenous to Africa, it is now
grown all around the world specifically in warmer, drier climates. The
structures of most Aloe plants are very similar. Aloe grows to maturity in
approximately four years, at which time the leaves begin to sprout. They taper
to a point near the top of the plant, and the leaves have soft spines every few
inches lining their silhouette. The Aloe Barbadensis Miller has about a 12-year
life span.
Studies have found that there are 75
ingredients contained in the Aloe leaf. These ingredients have a variety of
medical benefits. They are divided into the following categories:
·
Ligin – This cellulose substance is found in
the gel has no known medical properties except it posses the property of penetrating the human skin.
·
Saponins – These form soapy lathers when
mixed and agitated with water. They have been used in detergents, foaming agents and contain antiseptic properties.
·
Anthraquinones – There are 12 of these contained in
the sap of Aloe Vera: Aloin, Isobarbaloin,
Anthracene, Emodin, Ester of Cinnamonic acid, Chrysophanic acid, Barbaloin,
Anthranol, Aloetic acid, Aloe Emodin, Ethereal oil and Resistannol. These act
as natural laxatives, painkillers and analgesics, and they contain powerful
antibacterial, antifungal and virucidal properties.
·
Minerals – Aloe Vera contains the following
minerals:
·
Calcium
(essential for proper bone and teeth density)
·
Manganese
(a component of enzymes necessary for the activation of other enzymes)
·
Sodium
(ensures that the body fluids do not become too acidic or too alkaline)
·
Copper
(enables iron to work as oxygen carriers in the red blood cells)
·
Magnesium
(used by nerves and muscle membranes to help conduct electrical impulses)
·
Potassium
(regulates the acidic or alkaline levels of body fluid)
·
Zinc
(contributes to the metabolism of proteins, carbohydrates and fats)
·
Chromium
(necessary for the proper function of insulin, which in turn controls the sugar
levels in the blood)
·
Iron (controls
the transportation of oxygen around the body via the red blood cells)
·
Vitamins – Aloe Vera contains numerous
vitamins:
·
Vitamins
A, C, & E (crucial antioxidants that combat dangerous free radicals in the
body)
·
Vitamin
B & Choline (concerned with the production of energy, amino acid metabolism
and developing muscle mass)
·
Vitamin
B12 (responsible for the production of red blood cells)
·
Folic
acid (helps develop new blood cells)
·
Amino Acids – Amino Acids are the building
blocks of protein, which manufacture and repair muscle tissue. The human body requires 22 amino acids and needs 8
essential ones. Aloe Vera provides 20 of 22 required amino acids and 7 of 8
essential ones.
·
Enzymes – Some of the most important enzymes
in Aloe Vera are: Peroxidase, Aliiase, Catalase, Lipase, Cellulase, Carboxypeptidase, Amylase and Alkaline
Phosphatase. Enzymes help to break down food and assist in digestion. Some
enzymes help break down fats while others break down starches and sugars.
·
Sugars – Aloe Vera contains both
monosaccharides, such as glucose and fructose, and polysaccharides. Polysaccharides are the most important
types of sugars. They aid in proper digestion, maintain cholesterol levels,
improve liver functions and promote the strengthening of bones.
·
Sterols – Sterols are important
anti-inflammatory agents. The ones found in Aloe Vera are: Cholesterol, Sitosterol, Campesterol and Lupeol.
These sterols contain antiseptic and analgesic properties. They also have pain
killing properties similar to aspirin. As Aloe Vera is comprised of
approximately 99% water, all of these chemicals are contained in the remaining
1% of the plant. Although this may seem like a small percentage to contain so
many ingredients, its helpfulness has been proven to be significant.
That this is due
to synergistic actions. He writes, “Synergism is defined as, ‘the working
together of two or more drugs, muscles, etc., to produce an effect greater then
the sum of their individual effects.’” Aloe Vera has the ability to provide
essential nutrients, kill bacteria, viruses, fungi, yeasts and reduce
inflammation.
Tissues that die
and are renewed rapidly such as the lining of the gut, which renews itself
about every four days, and the skin every 21 to 28 days or so, need a rich and
ready supply of building materials to produce and maintain healthy, efficient
cells.” A proper diet supplemented with Aloe Vera is an effective way to get
these essential nutrients.
Aloe Vera can also
reduce inflammation to injured tissue. Inflammation occurs when healthy tissue
is injured and blood begins to clot around the tissue to repair the injured
tissue. Aloe Vera is a natural anti-inflammatory that is much
more delicate on the human body. The
benefits of Aloe Vera have long been tested throughout history. It is only in
recent years that studies have scientifically proven many of the medicinal
benefits of Aloe Vera. Perhaps the longer that scientist and botanists study
the benefits of Aloe Vera, the more improvements it will create to human health
and well-being.
History - Internal Uses Of Aloe Vera
Historical evidence encompassing
more than 4,000 years testifies to the high regard of ancient peoples to the
benefits of Aloe vera. In the 1930’s, interest in the internal gel was enhanced
when the material was found to be remarkably effective in treating
radiation-induced dermatitis.
Since that time, a number of
external and internal uses for the internal gel of Aloe have been reported in
the literature, some of which are truly remarkable. Owing to increasing
anecdotal reports purporting to corroborate beneficial effects of drinking the
ground, preserved, internal gel of Aloe, a number of scientific investigations
have been undertaken to evaluate the validity of the anecdotal reports. A few
of the scientifically documented beneficial uses of drinking Aloe beverages
will be delineated in Contradistinction.
Gastrointestinal Disorder
Aloe gel for “Las enferemedades del
estomago y los intestinos, pero especialment para las ulceras.” (The diseases
of the stomach and intestines, but especially for ulcers.) As a result of these
anecdotal reports, scientific investigations have been undertaken in animal
models (laboratory rats) which have shown that if Aloe gel is administered prior
to the ulcer-inducing stress (immobilization).
There is an 80% decrease in the
number of ulcers formed compared with the control animals given saline instead
of the Aloe gel. Similarly, if the Aloe gel was given after the ulcers were
formed, healing was three times as fast compared to the healing in the control
animals.
In a second laboratory
investigation, Aloe gel pretreatment was 85% effective in preventing stomach
lesions, and 50% better than the controls in healing the gastric ulcerations. Additional
studies showed that a common group of plant constituents, the triterpenes,
including lupeol, possess ulcer protective activity against the formation of
gastric ulcerations in albino rats induced by immobilization
restraint. investigations have shown that Aloe gel
preparations contain lupeol as well as other triterpenoids.
Aloe gel mixed with heavy liquid
petrolatum (2:1) was given to 12 patients, 7 males and 5 females, ages 24 to 84
years, with definitive x-ray evidence of duodenal ulcers. All 12 patients
showed complete recovery with no recurrence for at least a year after ulcer
healing. This study suffers, however, from the fact that (1) Duodenal ulcers
are often self-healing without any treatment, and (2) There was no control
group of patients treated in a similar manner without the administration of
Aloe. Nonetheless, the physicians who conducted the study represent trained,
clinically-experienced observers, and thus even these uncontrolled observations
have some scientific merit.
Anti-Cancer Actions
One of the common experimental
cancer models is sarcoma-180. When Aloe was administered to mice bearing S-180
tumors, the tumor growth was inhibited.Similarly, Alexin B, a specific molecule
species derived from Aloe, was shown to possess anti cancer activity against
lymphocytic leukemia. Additional
investigations revealed that another molecular species derived from Aloe,
Aloctin-A, had anti-tumor activity, but the action was to bolster the immune
system rather than a direct anti-tumor activity.
Immune System
There are several mechanisms which
contribute to the immunological protection enjoyed by normal persons. Among
these mechanisms the ingestion of bacteria and other potentially harmful agents
by certain white blood cells (a process termed phagocytosis) and the formation
of antibodies (formed by another group of white cells, the beta-lymphocytes)
are probably the most important.
Scientific evidence suggests that
Aloe gel contains substances which are active both in stimulating phagocytosis
as well as stimulating the formation of antibodies. In one study, the Aloe
fractions were shown to increase phagocytosis when injected into guinea pigs.
In another study, mice were injected
intraperitoneally with Escherichia coli, which caused a serious infection to
develop in the abdominal cavity, namely, peritonitis. Injects of materials from
two species of Aloe both stimulated
phagocytic activity in the animals. It was demonstrated that phagocytic
activity was depressed in adult patients with bronchial asthma.
A mixture of amino acids derived
from Aloe enhanced the depressed phagocytic function of the white blood cells
in these asthma patients. In an additional study when certain materials
(lectins) purified from Aloe were added to human lymphocytes raised in tissue
cultures, the human white cells were stimulated to produce antibodies.
Perhaps the most remarkable studies
concern the effect of Aloe fractions on the status of patients with HIV which
causes AIDS. The polysaccharide fraction of Aloe was shown to exhibit antiviral
activity and enhance cell function. The polysaccharide was given orally, 250
milligrams four times a day, to 8 patients with ARC (AIDS Related Complex),
with Walter Reed staging from 3 to 6. Eight of eight patients showed
improvement within 90 days of therapy with an average reduction of 2 Walter
Reed stages.
Fever and night sweats were
eliminated in all patients; diarrhea was alleviated in two of three patients,
and opportunistic infections (which are usually responsible for the death of
the AIDS patient) were controlled or eliminated in six of eight patients. Two
patients, unemployable because of the intensity of their symptoms, returned to
full employment.
Three of three patients showed a
decline in HIV core antigen (P-24). Initially positive HIV cultures became
negative in three patients. Clinical toxicity and side-effects were entirely
absent. Acute toxicity studies in animals showed no toxicity whatever at
dosages 100 times those used in the pilot human experiments. These experiments
however, were uncontrolled, and additional studies, utilizing appropriate
scientific study design would need to be done before the data would be
acceptable to the scientific community.
Atherosclerosis And Coronary Heart
Disease
Coronary heart disease associated with
the accumulation of blood fats (Lipids) in the lining of the arteries is still
one of the major causes of death in the Western world. Several studies in
animal models as well as in human subjects have suggested that the ingestion of
Aloe gel may have a beneficial effect by lowering serum cholesterol, serum
triglycerides.
And serum phospholipids, which, when
elevated, seem to accelerate the deposition of fatty materials in the large and
medium-sized arteries, including the coronary arteries of the heart. In one
study, albino laboratory rats were fed high cholesterol diets with the
experimental group fed the polysaccharide (Glucomannan) from Aloe. Compared
with the control animals, the group fed the Aloe fraction showed:
1. Decreased total cholesterol levels.
2.Decreased
triglyceride levels.
3.Decreased
phospholipid levels.
4.Decreased
nonesterified fatty acid levels.
5. Increased HDL cholesterol (the “good”
cholesterol) levels.
6.Markedly
increased HDL/Total cholesterol ratios.
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