Over at yourbrainonporn.com, there are numerous men discussing their addictions to pornography, how it has led to ED, depression and even more troubling symptoms. Their solution? Cut it out of your life.

It's a pretty daunting trove of information, but if your jerking it more than twice a day to porn, and feel like it's a problem, you should maybe take a look.

The following is by By Gary Wilson via Your Brain On Porn

What happens when you drop a male rat into a cage with a receptive female rat? First, you see a frenzy of copulation. Then, progressively, the male tires of that particular female. Even if she wants more, he has had enough. However, replace the original female with a fresh one, and the male immediately revives and gallantly struggles to fertilize her.

You can repeat this process with fresh females until he nearly dies of exhaustion. This is called the Coolidge effect—the automatic response to novel mates. And it’s what started you down the road to getting hooked on Internet porn.

Like that lab rat, you have a primitive mechanism in your brain urging you to fertilize the two-dimensional females, males (or whatever) on your screen. (Note: Coolidge effect also occurs in females. Studies show that, when given the opportunity, human females are just as promiscuous as males.)

Primitive circuits in your brain govern emotions, drives, impulses, and subconscious decision-making. They do their jobs so efficiently that evolution hasn't seen the need to change them much since before humans were humans.

More dopamine, please

For you, rats, and all mammals, the desire to have sex arises from a neurochemical called dopamine. Dopamine amps up the centerpiece of the primitive part of the brain—the reward circuitry. It’s where we experience pleasure, and where we get addicted. The ancient reward circuitry compels you to do things that further your survival and pass on your genes. At the top of our human reward list are food, sex, love, friendship, and novelty. These are called ‘natural reinforcers,’ as opposed to addictive chemicals. The evolutionary purpose of dopamine is to motivate you to do what your genes want you to. The bigger the squirt the more you want something. No dopamine and you just ignore it. Chocolate cake and ice cream—a big blast. Celery—not so much. Sex and orgasm are the biggest natural blast of dopamine available to your reward circuitry. One of dopamine's nicknames is the "molecule of addiction."

Although dopamine may be referred to as the pleasure molecule, this may not be technically accurate. Dopamine is more the craving for pleasure, or measure of potential value. Although controversial, the final reward or good feelings is thought to arise from opioids. Dopamine is wanting, opioids are liking. Addiction may be thought of as wanting run amok.

Novelty, novelty, more novelty

Dopamine surges for novelty. A new car, just-released movie, the latest gadget…we are all hooked on dopamine. As with everything new the thrill fades away as dopamine plummets. Here’s how the Coolidge effect works: The rat’s reward circuitry is squirting less and less dopamine with respect to the current female, but produces a big dopamine surge for a new female. Does that sound familiar?

Internet porn is especially enticing to the reward circuitry because novelty is always just a click away. It could be a novel “mate,” unusual scene, strange sexual act, or—you fill in the blank. With multiple tabs open and clicking for hours, you can experience more novel sex partners every ten minutes than our hunter-gatherer ancestors experienced in a lifetime. What’s a brain to do when it has unlimited access to a superstimulating reward it never evolved to handle? The brain eventually adapts, which can lead to addiction.