cut and paste, its not quite as easy to read because its formatted for PDF
The Anafit E-Zine Newsletter Ed1.vol3
The Estrogen Series: Part I
Estrogen and Adiposity: the Vicious Cycle
Estrogen is a necessary hormone but in excess it causes a host of issues. In this series of articles we will look at how
excess estrogen and estrogenic compounds cause problems and what can be done about it.
Estrogen and Fat
The link between estrogen and body fat is cyclical. As body fat increases so does production of the aromatase
enzyme, the enzyme that converts other hormones to estrogens. Increased production of the aromatase enzyme
increases the amount of estrogen produced. Likewise, as levels of estrogen increase, the amount of fat stored increases
and the body’s ability to burn those fats decreases. This relationship leads to large stores of fat that are difficult to
burn, producing aromatase enzyme, which sustains the high levels of estrogen. Breaking this vicious cycle, even with
exercise and diet, often proves to be difficult without directly addressing the cause and impact of high estrogen.
It is important for the purposes of this discussion to differentiate between estrogenic fat and androgenic fat stores.
Androgenic fat stores are intra-abdominal (inside the belly) and this type of fat stores is almost devoid of the
production of aromatase enzyme. Subcutaneous or peripheral body fat, also referred to as gynoid or female-pattern
fat, is a heavy producer of the aromatase enzyme. Areas where this type of fat is most prevalent are hips, chest, thighs,
lower back and triceps.
The aromatase enzyme, as mentioned above, converts other hormones to estrogens. It also converts androstenedione,
which is a precursor to testosterone, to the weak estrogen metabolite estrone. This aromatase enzyme also converts the
weak estrone and testosterone to the potent estrogen estradiol. This is significant because excess aromatase enzyme
not only increases total conversion to estrogens, but it significantly increases the production of the stronger estrogen
metabolite estradiol. Having more of the strong estrogen metabolite is highly linked to various “female” cancers,
along with heart disease, prostate cancer and other health issues. These problems are all in addition to the negative
impact that extra estradiol has on fat storage. In men, excess aromatase enzyme and subsequent estrogen production
leads to the emergence of female fat patterns as well as possible gynecomastia. Also, because more estradiol is being
produced, it enhances the negative feedback on testosterone production, lowering natural production of testosterone in
men. In women, aside from the very apparent fat storage issues, the increases in estradiol over estrone means more of
the negative health effects like the various cancers and heart disease that are linked to strong estrogenic signaling.
Basically this means less estrone, which is the relatively beneficial weak estrogen, and more estradiol, which is the
strong and relatively harmful estrogen.
Estrogens direct impact on body fat is primarily through the regulation of adrenoceptors. Estrogens, estradiol in
particular upregulate the alpha-2 adrenoceptors and also down regulate beta adrenoceptor activity. In essence, the beta
adrenoceptors act as the “gas pedal” When it comes to body fat and its utilization for energy (fat burning). The alpha
adrenoceptors do the opposite – they are the “brakes.” Estrogen, in those terms, enhances the brake pedal and
weakens the gas pedal on your fat burning. In the race to lose fat or stop from gaining it, high estrogen will puts you
in the slow lane at best.