You And Your Hormones
Hormones have gotten a bad rep these days, but they’re not the bad guys. Sure they can cause you to down an
entire gallon of Haagen Daaz before your period, but you
wouldn’t be here if it weren’t for them!
Hormones are chemical messengers that regulate
almost every activity in your body. Before hormones can
bark an order, they have to latch onto an appropriate
receptor site. Hormone receptor sites are like little parking
garages built onto cells. Once the hormone parks
itself into a receptor site, it’s free to enter the cell and
tell the cell what to do.
As far as your breasts are concerned, there are four
hormones that matter most: estrogen, progesterone, prolactin,
and growth hormone. These hormones command
your breasts to grow.
Ah, estrogen. Without it, I guess we’d all
be walking around with hot flashes all day!
It is also the hormone most responsible for
Actually, estrogen is not a single substance.
There are sixty hormones with
estrogenic properties swirling through
your body at this very moment! The three main estrogen
hormones include: estradiol, estrone, and estriol.
Estradiol is the strongest. It is produced by the ovaries
and it is the hormone that is responsible for breast development.
Estrone is a weaker estrogen produced by the
ovaries and in fatty tissue. Estriol is the weakest of the
three and is made in the body from other estrogens.
A girl first begins secreting estrogen between the
ages of eight and thirteen, once enough body fat has
accumulated. This marks the beginning of puberty.
Estrogen causes the uterus, vagina, and Fallopian tubes to
grow. It gives us underarm and pubic hair (banishing us
to a lifetime of bikini waxes) and encourages fat stores in
the lower body to increase. Last but not least, estrogen
makes our breasts grow!
Once estrogen levels are high enough, ovulation
occurs for the first time. This happens when a mature egg
is released from an ovary, signifying the start of the menstrual
As an adult, your estrogen levels rise and fall with
your periods. At the beginning of the menstrual cycle,
hormone levels are very low. When the hypothalamus
gland senses that hormones are low, it stimulates the
ovaries to begin producing more estrogen. Estrogen is
responsible for maturing an egg during the first two
weeks of the menstrual cycle. When estrogen levels peak
around day twelve, ovulation occurs.
As far as natural breast enlargement goes, estrogen
is the most important hormone involved. As I’ve already
explained, increased amounts of estrogen (or estrogenic
substances) lead to breast growth. However, more is not
always better. Too much estrogen can overload the body,
shutting down estrogen receptors. This process is known
as down-regulation.3 If too many estrogen receptors are
shut down, your breasts won’t get the message to grow!
But don’t worry, I’ll show you how to create the perfect
estrogen balance for breast growth in just a bit.
Estrogen and testosterone
seem about as different as,
well, women and men - yet
they are intimately connected.
The ovaries produce a small amount of testosterone, which is necessary for
strong muscles and a healthy sex drive. While men produce
around seven milligrams of testosterone per day, a
woman normally produces 3/10 of one milligram per
About 75% of the testosterone that your ovaries
produce is converted into estrogen. This conversion
process is called aromatase and takes place in your body’s
fat cells. Your fat cells create a special substance, called an
aromatase enzyme, that converts excess testosterone into
Finding the right balance between estrogen and
testosterone is crucial. Many women actually produce too
much testosterone, which can definitely sabotage breast
growth. Fortunately, there are plenty of ways to balance
testosterone levels so that your breasts are free to grow.
Progesterone is another important
breast enlargement hormone.
Specifically involved in the formation of
the glands, it works alongside estrogen
to keeps your female system humming
Progesterone is secreted after you ovulate for the
first time - about two years after the onset of puberty.
Your body gets the message to produce progesterone each
month after an egg is released. Progesterone causes a lining
to grow in the uterus; if the egg is not fertilized, the
uterine lining breaks down and you get your period.
Progesterone is known as the “pregnancy hormone.”
During pregnancy, progesterone is produced in very large
amounts. It protects and nourishes the growing fetus, strengthens the pelvic walls in preparation for labor, and
makes your breasts grow really huge! (Alas, temporarily.)
Progesterone and estrogen are considered antagonists,
meaning they tend to work against each other. If
the level of either hormone gets too high, it will cause the
opposite hormone level to fall, just like a seesaw. Your
body tries to keep balance by increasing its sensitivity to
the lower hormone. This means that high levels of progesterone
will cause the body to become more sensitive to
the effects of estrogen - and vice versa.
Just as the estrogen/testosterone balance is crucial
for breast enlargement, so, too, is finding the right balance
between estrogen and progesterone. Both hormones
are essential, but there is a definite time and place for
each one. Later, I’ll explain exactly how to achieve the
perfect estrogen/progesterone balance needed for breast
Your body generally only secretes prolactin
at two specific times: during puberty and
during pregnancy. Because it plays such a
key role in breast development, though,
prolactin is one hormone that you definitely
want to get to know.
During puberty, prolactin works with
estrogen to develop the mammary glands,
while increasing the number of estrogen receptors in the
breasts. Prolactin also causes the breasts to store fat by
increasing the production of lipoprotein lipase (LPL) in
your breasts.5 LPL is a “fat storage” enzyme.
During pregnancy and while nursing, prolactin controls
the production of milk. It is first secreted around
the eighth week of pregnancy and peaks at birth. After
that, prolactin is only produced according to stimulation -
namely, a baby suckling at your nipple. Interestingly
enough, you don’t actually have to be pregnant to produce
prolactin. Any kind of regular stimulation is usually
enough to trigger it.
Normally, prolactin is inhibited by a “prolactin
inhibiting factor” (PIF), known as the brain chemical,
dopamine.6 You’ve probably heard of dopamine before.
Besides suppressing prolactin, this chemical is connected
to emotions and addictions. Nicotine, cocaine, and other
stimulants produce feelings of euphoria by increasing
dopamine levels in your brain. But be warned: these drugs
are no good for the boobies!
Adequate prolactin levels are absolutely crucial for
triggering breast growth. And soon, I’ll share numerous
ways to “turn on” prolactin naturally.
Growth hormone, as the name implies, triggers
the growth of your body. It also plays
a special role in breast development.
Growth hormone is so important that it is
one of your body’s most plentiful hormones.
It is produced by the pituitary gland
during the first two hours of sleep. Almost
immediately after it’s secreted, growth hormone
is converted in the liver into a new,
more usable substance known as Insulin like
Growth Factor (IGF).
Growth hormone could be thought of as
your body’s “Master Hormone” since it regulates every
other hormone you’ve got. Growth hormone is produced
in massive amounts during puberty, promoting the
growth of cells, tissues, and organs. Without enough
growth hormone, your body - and your breasts - simply
As an adult, growth hormone is involved in tissue
repair and cell replacement. Unfortunately, growth hormone
levels start to plummet after the age of thirty. By
the time you hit sixty, your growth hormone level could
be 75% lower than it was when you were twenty! Low
growth hormone levels are directly responsible for the
aging of the body.
Breast enlargement requires a lot of growth hormone.
You had a ton of it at your disposal during puberty,
but if you’re over the age of eighteen, you’re going to
have to boost it back up in order to get your breasts to
grow again. Fortunately, there are all kinds of easy, natural
ways to do this that I’ll share with you.