Cellulite
Because it
plagues women who are both thin and overweight, cellulite
has been a problem that has been very difficult to cure. An
understanding of how it works and what may actually produce benefit
will help guide you away from scams and point you
toward potential
solutions.
What
causes it?
Virtually
all women develop cellulite after puberty on their hips and legs. There
are multiple factors that influence its development. Genetics may play
a
role as white women tend to have more than Asian woman. A sedentary
life style not only causes obesity which enhances the dimpling, but
prolonged periods of sitting or standing may decrease blood flow which
can affect the tissue architecture. Even the hormone fluctuations of
pregnancy can promote its appearance.
The
main factor that causes cellulite and that has the most
scientific
evidence behind it is a disruption of connective tissue in the skin in
these areas of the body. Instead of a smooth layer of fibers that holds
fat in its place, there are areas of weakness that allow subcutaneous
fat to slip outwards (i.e. herniate). This creates the bulging and
orange-peal appearance. There may be similar structural
problems that cause stretch marks.
Estrogen
stimulates fat cells to divide and replicate. The fat cells that
respond to estrogen tend to be larger than others, located in the hips
and thighs, and more resistant to being degraded. In contrast, fat
cells that accumulate in the abdomen (where the majority of fat is on
men) are more sensitive to adrenaline which tells them to break down
and dissolve their stored fats. The estrogen
sensitive stubborn
fat is the same that is responsible for cellulite.
Another reason
that these areas tend to contain stubborn fat is that the
thighs and buttocks are made up of more "white fat" than "brown fat." The brown fat/adipose tissue (BAT)
contains more mitochondria
and its energy stores are more easily used that white fat (WAT). BAT
responds more to adrenaline than WAT does. Each BAT cell is also
physically smaller than each WAT cell.
| Classification of
Cellulite |
| Grade
I |
Smooth
skin without dimpling upon standing or lying down. It does dimple when
pinched. |
| Grade
II |
Has
a mattress-like appearance upon standing that goes away when lying down. |
| Grade
III |
Skin
dimples when standing or lying down. It is made worse by pinching. |
Cellulite
Treatment
Unfortunately,
most of the ways to get rid of cellulite have shown only mild
improvement which are not maintained over time. Additionally, the
scientific studies that support their use of small and not of the
highest scientific quality. However, there are some treatments that may
give positive benefits, and as the quest for cellulite removal
continues, promising therapies are on the horizon.
Weight Loss
Even
though women of all sizes are affected, losing weight can decrease the
severity of cellulite for most, but there are some women for whom
losing weight makes its appearance worse. As one loses weight,
individual fat cells become smaller and more sensitive to the positive
effects of adrenaline, even in the stubborn fat regions. Weight loss
must be a continue process for these changes to be maintained.
Massage
& Suction Techniques
The theory is
that inadequate blood circulation in fat causes dimpling. Endermologie
treatment uses a machine to mobilize fat tissue. The treatments are
done
twice per week and last 10 to 45 minutes. Despite its high costs,
there is little scientific evidence supporting its use and no
randomized control trials. One study using only 10 minute
treatments showed that it was ineffective, while another study showed that it could
reduce thigh circumference.
Liposuction
There are
conflicting reports of the benefits of liposuction.
Currently, it is not a recommended cellulite treatment. Its lack of
success is likely because liposuction removed deep fat and not the fat
just below the skin that causes dimpling.
Subcision
The subcision
technique involves using a needle (like ones used for injections) to
break apart the connective tissue in subcutaneous fat. The idea is that
this would allow the fat tissue to evenly distribute. However, this
could theoretically further weaken the layering of fat tissues leading
to more herniation and even worse skin dimpling.
Mesotherapy
Mesotherapy
is the process of injecting substances underneath the skin. There have
been various compounds used in mesotherapy to treat cellulite, but the
most commonly used substance is phosphotidylcholine
(soybean lecithin extract). Another popularly used solution contains isoproterenol.
Phosphotidylcholine is already being used to treat the abnormal fat
accumulation that develops from some HIV medications. The injected
substances activate receptors on fat cells that signal then to
breakdown and either release or use up their energy stores. The cells
in
turn shrink. There is some scientific evidence that mesotherapy
produces improvement, but dimpling returns after injections a stopped
for a period of time.
Radiofrequency
Devices
There are
several radiofrequency (RF) devices, but only VelaSmooth
is FDA approved for cellulite treatment, and there is scientific
evidence that it works. VelaSmooth combines RF with infrared light and
massage. The Alma Accent RF system and ThermaCool
may also work. The exact mechanism of how these work is not yet known.
They may have effects on connective tissue, inflammation, or
circulation.
Ultrasound
Although it
does not have FDA approval, the UltraShape device fat tissue
thickness beneath the skin. It uses ultrasound waves to
disrupt connective tissue. It may do this by the physical forces of the
sound waves or the heat generated by vibrations. These effects are on
the microscopic level.
Laser
Therapy
In
combination with modified liposuction techniques, lasers can more
specifically target fat tissue and can tighten skin. It also makes
traditional liposuction less invasive. It is probably best used for
small surfaces rather than large areas.
Cellulite
Creams
Various
chemicals that activate the same receptors as adrenaline have
individually been tried as a cellulite cream. Studies have not shown
them to be effective. This likely has to do with the fact that fat in
the thighs and buttocks is more resistant to them. However, a different
chemical, retinol has been shown to improve skin dimpling. The cream Revitol has retinol A in it, as
well as caffeine.
Herbal
products like Cellasene have also been tried in creams. Studies on
Cellasene have that this it does not produce any benefit. It is
possible that any herbal product can have plants that may cause
allergic reactions.
Drugs
A cellular
receptor called peroxisome proliferator-activated receptors (PPARs)
play an important role in metabolism and several diseases such as diabetes. Activation
of PPARs on fat cells by peterselinic acid or conjugated
lineoleic acid produces several effects, including skin tightening and
the prevention of fat cells accumulating more fats.
It is important you
discuss any weight loss or exercise plan with your doctor. Only you and
your physician can decide what is best for you. Some people have
certain conditions that prevent them from doing all exercises, and goal
body weights may be different for different people. You need to discuss
all these things with your physician before starting any weight loss or
exercise program.
This
article was written by
John
Vickery, MD.
References
J
Am Acad Dermatol. 2010 Mar;62(3):361-70
J Am Acad Dermatol. 2010 Mar;62(3):373-84

Last
updated: 05/16/2010
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