it just be wonderful if a pill could instantly dissolve off
all our extra holiday cheer? Some claim to have found it in a
supplement called raspberry ketone. Others warn us to look at
what we know about raspberry ketone, thanks to some smart
investigation by dietitian intern Marian Crockett:
"Raspberry ketone is the primary aroma compound of red
True. Raspberry ketone (also referred to as RK) is a chemical
compound that gives raspberries their fruity fragrance. Food
and cosmetic manufacturers add it to their products for this
"Research has shown that raspberry ketone can help with
weight-loss efforts, especially when paired with regular
exercise and a well-balanced diet of healthy and whole
Regular exercise and a well-balanced diet do indeed help with
weight loss efforts. Raspberry ketone has not been
scientifically studied in humans, so it’s anyone’s guess
whether it aids weight loss.
"Raspberry ketone causes the fat within your cells to get
broken up more effectively, helping your body burn fat
Perhaps if you are a rat. One study tested RK on six obese
male rats and compared it to six other rats. The rats fed RK
were more likely to lose weight. Another study exposed RK to
fat cells in a test tube and found that RK stimulated the
breakdown of these cells.
"The recommended dose of raspberry ketone for weight loss
is 100 milligrams per day."
Who knows? No human studies have yet been done. (I think I
already said this.) And if we extrapolate the dosage given in
the six-obese-male-rat study, it would translate to several
thousand milligrams in humans.
"Raspberry ketone product is made from ingredients that
are 100 percent natural, ensuring that there are no negative
Rattlesnakes are 100 percent natural and can still bite you.
Some concern has been expressed that RK is chemically similar
to a stimulant called "synephrine" which can
increase heart rate and blood pressure … not a good idea for
anyone with a heart condition.
RK "slices up fat molecules so it burns easier …"
chemical structure is also similar to capsaicin — the
heat-generating substance in hot peppers. In a test tube, RK
appears to stimulate a protein that breaks down fat.
"Raspberry ketone is a miracle fat burner in a
Raspberry ketone is a "miracle money maker" in a
bottle. Unless you are an obese male rat, it is way too early
to draw any conclusions about the effectiveness or safety of
RK as a weight loss aid.
review article in the International Journal of Sports
Nutrition concluded: "There is no strong research
evidence indicating that a specific supplement will produce
significant weight loss, especially in the long term.
Weight-loss supplements containing metabolic stimulants (such
as caffeine, ephedra, or synephrine) are most likely to
produce adverse side effects and should be avoided."