It's a hormone.

It's a stress hormone.

No, it's a hormone called oxytocin.

What I lack is growth hormone.

What I lack, is growth hormone.

It told us about hormone replacement therapy.

And the hormone IGF 1 promotes growth.

The daf 2 hormone receptor is very similar to the receptor for the hormone insulin and IGF 1.

Her blood had elevated levels of growth hormone.

Platelet acceleration, human growth hormone and cybernetic implants.

Female hormone imbalance is a major cause of infertility.

Love is nothing more than a temporary hormone imbalance.

Normally the testes should make testosterone, the male hormone.

Insulin is required for life, it's an essential hormone.

And the daf 2 gene encodes a hormone receptor.

Physiologically, there also are differences on two key hormones testosterone, which is the dominance hormone, and cortisol, which is the stress hormone.

There is the hormone that tells plant bits to grow.

A plant bit might use up the hormone around it.

Testosterone is another hormone that increases oil production in the skin.

And the adrenal glands make androgens, which are a masculinizing hormone.

If you change this hormone pathway in flies, they live longer.

So how can a hormone ultimately affect the rate of aging?

Surgical alterations, radical hormone therapy using average citizens as unwitting guinea pigs.

To understand this side of stress, we need to talk about a hormone, oxytocin, and I know oxytocin has already gotten as much hype as a hormone can get.

It might just be a simple hormone or something that could do this.

If you have an empty stomach, your stomach produces a hormone called ghrelin.

The hypothalamus, the master controller of your hormones, releases something called corticotropin releasing hormone.

There was an urgent call from Mrs. Beatrice. She's concerned about her hormone therapy.

Sorry about that. I've just given you a shot of cortisol, your fight flight hormone.

So that means that the normal function of this hormone receptor is to speed up aging.

They just require an extra hormone given at the right developmental stage to make them male.

lose their testosterone, they're chemically castrated, and they're subsequently feminized because now they're making the female hormone.

And that hormone is typically released an hour or two before we go to bed at night.

It even has its own cute nickname, the cuddle hormone, because it's released when you hug someone.

Part of it's on the outside, and it's catching the hormone as it comes by in green.

But the amazing thing was, when he lived with sighted people, we realized that the timing of this hormone was beginning to be released the secretion of this hormone was being released at 11 or 12 o'clock at night.

This triggers the pituitary gland, a pea sized gland found at the base of the brain, to release adrenocorticotropic hormone which then stimulates the adrenal gland sitting on top of the kidneys to release cortisol, the major stress hormone.

The glucose won't enter by itself, it needs the assistance of a hormone or a molecule called insulin.

What turns off this orchestrated increasing energy and alertness is the release of the sleep promoting hormone, melatonin.

But this is a very small part of what oxytocin is involved in. Oxytocin is a neuro hormone.

Insulin is a hormone that promotes the uptake of nutrients into your tissues after you eat a meal.

But that release of the hormone can be suppressed by light and it can also be shifted by light.

Shaking someone's hand for six seconds dramatically raises the level of oxytocin in your bloodstream, now that's the trust hormone.

Your heart has receptors for this hormone, and oxytocin helps heart cells regenerate and heal from any stress induced damage.

The evidence of that is that studies in rats, again with atrazine, show that the hormone imbalance atrazine generates causes abortion.