Ask
anyone if they know a hormone that causes weight loss. Most people will mention
the thyroid hormone. That's true,
but did you know there are actually six hormones that impact fat loss?
This
is the group I refer to as "the fat-loss six": thyroid hormones,
adrenaline, glucagon, adiponectin, the androgenic hormones (DHEA and
testosterone) and the growth and rejuvenation hormones (growth hormone and
acetylcholine). These super-performers help us get lean and strong in two key
ways: They directly stimulate metabolism, or the breakdown of body-fat stores
for energy, and they stimulate fat loss by supporting the growth of
metabolically active muscle.
Here's
how:
Thyroid Hormones (TSH, Free T3 and Free T4)
The masters of your metabolism, these hormones
drive every single cell in your body. It all starts with TSH
(thyroid-stimulating hormone). TSH, in turn, stimulates thyroxine (free T4),
which is then converted to triiodothyronine (free T3). When all three are
functioning properly and produced in the correct amounts, your metabolism is a
fat-burning machine. And that's what we're aiming for!
Adrenaline
Also known as epinephrine, adrenaline is
responsible for revving you up (think fight-or-flight response and
all the physical effects it has on your body). This handy hormone allows the
body to free up the fats and sugars it's stored so that we have that burst of
energy we need when we really need it.
Glucagon
Think of glucagon as insulin's helpful opposite:
Rather than lowering blood sugar by transporting glucose from the
bloodstream (and into liver, muscle and fat cells) for storage as glycogen or
fat, glucagon raises blood sugar by breaking down the fat and glycogen that
were stored. We can tap into this awesome hormone through exercising, consuming
protein, or experiencing a dip in blood sugar.
Adiponectin
Adiponectin isn't nearly as well known as the
previous three hormones—and that's really too bad. This fantastic hormone is
produced in and sent out from your fat cells, but it's also got a direct and
reciprocal relationship with them, which means that although it's produced by
your fat cells, it actually helps burn up fat! Even better, the higher your adiponectin
levels, the higher your energy and caloric expenditure. And because it
increases insulin sensitivity, it also improves glucose tolerance and inhibits
inflammation.
The Androgenic Hormones (DHEA and Testosterone)
Let's talk about sex, baby! And by that I mean sex
hormones. DHEA (dehydroepiandrosterone—yes, that's a real word, and a really
important hormone) comes from the adrenal glands and leads the charge for estrogen
and testosterone. A DHEA boost is definitely part of your hormonal powering up
because of its ability to support metabolically active muscle growth.
Muscle growth is key to fat loss, so attending to
DHEA is part of this program. DHEA will support your immune system, improve
tissue repair and sleep and neutralize the impact of cortisol (the stress
hormone), among a host of other benefits.
And testosterone? It's almost impossible to
build muscle mass without enough of this hormone—for both men and women—and
testosterone is also connected to improvements in libido, bone density,
strength, motivation, memory, fat burning and skin tone. Boosting this dynamic
duo is a huge part of realizing your health and vitality goals.
The Growth and Rejuvenation Hormones (Growth Hormone and Acetylcholine)
It's impossible to discuss fat loss and muscle
growth without touching on growth hormone and acetylcholine. Released during deep
sleep, growth hormone is almost magical in its ability to repair tissue and
build muscle. Its regenerative powers can make a huge difference in your
fat-loss and muscle-growth goals.
And when it comes to communicating with muscles to
encourage their movement, coordination and tone, you need the right amounts of
acetylcholine. Because we use up this hormone when we exercise, boosting its
levels is imperative for maintaining strong, healthy and metabolically-active
muscle
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