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Ayurvedic herb Coleus forskohlii shows promise in enhancing lean body mass
This article was written by Vladimir Badmaev,M.D.Ph.D and Muhammed Majeed,Ph.D.
Introduction
There are two
important reasons
to maintain or
regain lean body mass.
First, lean body mass plays
a vital role in any successful
weight training regimen.
Second, there is growing
awareness that lean body
mass is proportionate to
the overall health of
an individual.
Lean body mass consists of muscles, vital
organs, bone and bone marrow, connective tissue
and body water. The percentage of lean body
mass to fat not only determines the body's
aesthetic look, but more importantly, it determines
a person's physical fitness, health status
and the risk of morbidity (disease) and premature
mortality. A person can assess her body composition
by calculating body mass index (BMI),
attained by dividing body weight in kilograms by
the square root of height in meters. The BMI
norm is between 18 and 25 kg/nA A value over
25 puts a person in the overweight category, and
values greater than 30 correspond to various
degrees of obesity.
Use of a standardized root extract from
Coleus forskohlii (Fam. Labiatae) may help to
increase lean body mass and optimize body compostion.
Coleus is a member of the mint family,
is native to India and indigenous to its Ayurvedic
medicine. Although traditionally used as a pickle
or food spice, Coleus has gained prominence as
the only plant source of diterpene forskolin. The
compound forskolin is known to enhance adenylate
cyclase, an enzyme that splits a high energy
molecule of ATP to yield cyclic AMP. Nicknamed
in literature as a "second messenger," cyclic AMP
facilitates the action of a "primary messenger" or
various hormonal and bioactive substances in
the body. The role of cyclic AMP is indispensable
to many body functions. It causes a chain of bio-
chemical events that paces body metabolism and
food induced thermogenesis, and provides mechanisms
for controlling body composition and lean
body mass.
While the impact of lean body mass on
health has yet to be fully understood, the health
promoting value of increasing lean body mass
can be appreciated indirectly due to the known
benefits derived from physical exercise in building
lean body mass and stamina. Consider that
lean body mass correlates positively with the
performance of an incremental treadmill
exercise test and that the fat percentage in
the abdomen is significantly less in elite
athletes in comparison with non-exercising controls.
Because abdominal fatty tissue is a significant
risk factor for cardiovascular disease,
exercise that results in increased lean body
mass may have a positive impact on long-term
cardiovascular risk and life span.
One rapidly growing segment of the U.S.
population whose health is appreciably affected
by imbalance in body composition is the
geriatric group, especially those above 75
years of age. Aging itself diminishes lean body
mass, but the elderly are also prone to
develop conditions that either further deplete
lean body mass and/or their bodies are
deteriorated by an excess of body fat over the
lean body mass. For example, occurrence of
hypertension, adult onset diabetes mellitus
and dyslipidemia increase with advancing age
and obesity. These conditions may alter body
composition with an increase of central
obesity and decreased lean body mass.
It should be noted, however, that body com-
position and overall fitness are health predictors
for the entire population regardless
of age and gender. For example, one study examined
the health benefits of leanness and the
hazards of obesity in men while simultaneously
considering fitness, as determined by maximal
exercise testing. Interestingly, the unfit, lean
men had a higher risk of all-cause and cardiovascular
disease (CVD) mortality than men who
were fit and obese. The impact of body composition
and women's health can be seen in a study
in Norway Total serum cholesterol and BMI
were analyzed in 242 women who had breast
cancer compared to the general population during
a mean follow-up of 12 years. Women whose
total serum cholesterol values were elevated
and/or who were obese had significantly higher
chances of premature death in comparison to
women with normal cholesterol levels and/or
normal body weight.
Epidemiological studies indicate that the
impact of body composition on our health
starts early in life. The association between
body mass and mortality in more than
100,000 U.S. women 30 to 55 years of age was
evaluated. During 16 years of follow-up, 5
percent of overall deaths were documented-
0.8 percent from cardiovascular disease, 2.5
percent from cancer and 1.7 percent from
other causes. The lowest mortality rate was
observed among women who weighed at least
15 percent less than the U.S. average for
women of similar age and among those whose
weight had been stable since early adulthood.
In a separate study, it was found that being
overweight in adolescence predicted a broad
range of adverse health effects that were
independent of adult weight after 55 years
of follow-up.
Increasing Lean Body Mass
The biochemical mechanism of maintaining
or increasing lean body mass is related to
the availability of cyclic AMP. By facilitating
hormonal action, cyclic AMP may regulate the
body's thermogenic response to food, increase
the body's basic metabolic rate, and increase
utilization of body fat (since thermogenesis is
preferentially fueled by fatty acids derived
from body fat and/or food). These events also
correspond to the buildup of lean body mass.
Based on the above rationale and mechanism
of diterpene forskolin, Sabinsa Corporation
has clinically tested its patented standardized
extract of Coleus, ForsLean, for its
ability to increase lean body mass.
ForsLean is an extract of Coleus forskohlii
root, standardized for 10 percent forskolin. In
one study, ForsLean was tested in an open-
field study with a population of six overweight
women (BMI greater than 25). The
tested formula was in the form of two-piece,
hard shell capsules; each capsule contained
250 mg of the extract. The overweight, but
otherwise healthy women, received the
forskolin formula twice daily for eight weeks.
Participants were instructed to take one cap-
sule in the morning and one in the evening,
half an hour before a meal. Each participant
was asked to maintain her previous daily
physical exercise and eating habits. In addi-
tion, physical activity was monitored based on
a questionnaire before and during the trial.
During the eight week trial, the mean values
for body weight and fat content significantly
decreased, whereas lean body mass was significantly
increased as compared to the baseline.
The regimen did not adversely affect the
systolic/diastolic blood pressure nor the pulse
rate; indeed, a trend was observed of lower
systolic/diastolic pressure during the course
of treatment.
Based on the results of this preliminary
study, Sabinsa recently obtained a U.S.
patent for ForsLean's weight-loss mecha-
nism. As mentioned previously, forskolin is
known as a compound with versatile biological
actions based on its ability to stimulate
adenylate cyclase and cyclic AMP levels.
Typically, an increase in cyclic AMP leads to
subsequent activation of protein kinase.
Protein kinase has been shown to activate
the enzyme lipase, which disposes of triglycerides,
known as building blocks of fatty tissue.
The other factor relevant to the weight
loss mechanism of forskolin involves its thyroid
roid stimulating action, comparable in
strength to thyrotropin or TSH. The thyroid
stimulating action offorskolin may also contribute
to the increase in the metabolic rate
and thermogenesis. Forskolin may also be
involved in regulating insulin secretion.
Insulin, although well recognized for its
metabolism of carbohydrates, is often
overlooked as being involved with the
metabolization of other macronutrients, i.e.
fats and proteins, major contributors to
body composition.
As advocated by the Centers for Disease
Control, sensible, moderately intensive exercise
for at least 30 minutes daily is the main
method to maintain lean body mass.
However, the combined effects of exercise and
Coleus could contribute to and further optimize
lean body mass. This approach could be
especially useful to people who are disabled or
elderly and may have a difficult time exercis-
ing due to physical limitations.
Because most weight loss regimens result
in a drop in the metabolic rate and a decline
in thyroid function, use of Coleus as an
adjunct to exercise could be particularly relevant.
A decreased metabolic rate and thyroid
function often lead to the loss of lean body
mass, which limits the health benefits of trim-
ming the waistline. This undesired and often
detrimental effect on lean body mass also
illustrates the limitations of low calorie diets
in weight loss regimens.
One study found that formerly obese
subjects had a 3 to 5 percent lower resting
metabolic rate than control subjects. The
occurrence of a low resting metabolic rate is
likely to contribute to the high rate of
weight regain in formerly obese persons.
The very nature of many weight loss regimens
may limit the beneficial outcome of
the weight loss therapy. In another study, 20
middle-aged subjects were randomly
assigned to a standard treatment (appetite
suppressant) plus diet or a resistance exercise
plus diet. Both groups consumed a very
low calorie diet (800 kcal/day liquid formu-
la) for 12 weeks. The standard treatment
plus diet group lost a significant amount of
lean body mass, whereas no decrease in lean
body mass was observed in the group with
resistance exercise and diet. In addition, the
diet plus exercise group had an increase in
their resting metabolic rate, while the resting
metabolic rate decreased in the standard
treatment group.
It should be emphasized that healthy
functioning of the body depends not so much
on a lower fat content, but rather on obtaining
a higher percentage of lean body mass.
Straight dieting often results in a loss of not
only the fat but also lean body mass. And as
previously pointed out, loss of lean body mass
offsets any benefits derived from the reduction
of body weight, and can potentially
increase one's chances for diabetes, cardiovascular
disease and possibly some forms of cancer
due to poor metabolic activity.
Sabinsa's preliminary clinical study with
Coleus showed that 25 mg of forskolin twice a
day can improve overall body weight by
increasing lean body mass and by decreasing
weight from body fat. Thus, the use of forskolin
is about body composition management rather
than weight loss. In view of this finding,
forskolin can potentially benefit not only overweight
people but also those individuals who
are active in training or body building and are
looking to increase their lean body mass to
body fat ratio. Supplementation with forskolin
can help in gaining health for those already
engaged in a healthy active lifestyle and
assists in regaining health for those who are
less active and need help. Thus, forskolin sup-
plementation can potentially benefit a large
group of people to help restore health by restor-
ing a healthy body composition.
Vladimir Badmaev, M.D., Ph.D., was
trained in clinical and anatomical pathology at
Kings County Hospital and Downstate Medical
Center, both in New York. His Ph.D. is in the
field of Immunopharmacology. Muhammaed
Majeed holds a Ph.D. in Industrial Pharmacy
from St. John's University in New York.
Special Notice: The statements contained in this article have not been evaluated
by the U.S. Food & Drug Administration (FDA).
The products discussed are not intended to diagnose, treat, cure, or prevent
any disease.
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