"Effect of Aloe Barbadensis and Colfibrate on Serum
Lipids in Hyperlipidemia in Presbytis Monkeys."
Dr. V.P. Dixit & Dr. Suresh Joshi
Dept. of Zoology at the University of Rajasthan, Jaipur,
India.
A brief description of the study follows:
The doctors ran a series of blood tests (1983) on a sample test group
of monkeys with high levels of fat and cholesterol in the blood to determine
the before and after affects of having introduced juice from the whole
leaf of Aloe Vera, ground at room temperature and set to a purification
level of 40 degrees centigrade.
Two separate test groups of 5 monkeys were captured, weighed and fed,
then fasted and injected with Triton WR as a means of increasing blood
level cholesterol. After 72 hours, the blood was then withdrawn to determine
what is referred to as "Zero h sampling."
After another 48 hours, another sample was taken and both were exposed
to centrifuge testing to determine the level of HDL (the good cholesterol),
VLDL and LDL cholesterol (the choke-your-heart kind of cholesterol).
Then, Aloe Vera and Clofibrate were introduced to the respective test
groups and blood samples again were drawn. In all five animals tested with
the Aloe Vera, it showed dramatic reductions in both types of LDL cholesterol
and triglycerides - a rate that was about twice as effective as the comparable
clofibrate treatment.
In their report the Dixit, Joshi test team reported the following:
The maximum fall in the mean value of the non-esterified free fatty
acid was 45.5 percent with Aloe barbadensis at 24 hours as compared to
23 percent fall at 32 hours by the clofibrate treatment.....Hypercholesterolemia
commonly associated with coronary heart disease is correlated with an increase
in the plasma LDL-cholesterol and a decrease in HDL- cholesterol cholesterol
concentration. Reduction in serum cholesterol caused by administration
of Aloe Barbadensis can be attributed to a reduction in LDL + VLDL - cholesterol
They also observed that significant rises in the HDL or good cholesterol
also occured in the Aloe test group of Presbytis monkeys:
Aloe Barbadensis administration increased the serum HDL-cholesterol
ratio which is associated with a reduced incidence of atherosclerosis in
humans. Aloe Barbadensis thus seems to be an interesting agent which could
be of use in the treatment of hypercholesterolemia. Long term toxicity
and tolerance studies in non-human primates are necessary before the plant
can be recommended for clinical use.
Testing for relative toxicity is always a crucial factor in finally
determining the efficacy for human consumption of any plant, treatment,
or medication. Nevertheless, if Dixit and Joshi had only consulted our
earlier works or looked into the score of toxicology studies or dozens
of reports on the use of Aloe Barbadensis, they would have found what we
all already know: When using Aloe Vera as a treatment modality, there is
no relative toxicity that can be recorded. No LD-50s (or kill ratios) have
ever been established. It actually has a better toxicology record than
some tap water.
The Second Test
The second set of tests (1986), again by Dixit and Joshi, involved
a study in which a control group of albino rats were fed high cholesterol
diets, while a test group were fed polysaccharide constituents from the
Aloe Vera plant. Compared to the group of rats fed the high cholesterol
diets without Aloe, the animals fed the consistent Aloe fraction showed
the following:
- Decreased total cholesterol levels
- Decreased triglyceride levels
- Decreased phospholipid levels
- Decreased non-esterified fatty acid levels
- Increased HDL cholesterol levels [the good kind]
- Markedly increased HDL total cholesterol ratios
Overwhelmingly, the evidence in the albino rat test, like the prebystis
monkey test before it, pointed to the pronounced indication that ingestion
of Aloe Vera might have a very positive effect on lipid (fat) metabolism
in humans and might tend to decrease the risk of cardiac problems.
reference: ALOE
VERA/The Inside Story - pg. 149-151, by Bill Coats, R.Ph., C.C.N.,
with Robert Ahola