I've been vegetarian for a few years. Even though I am 35 and super healthy, I suffer from frequent ED. So in the past year I have been paying close to attention to what I eat and the effect on my libido/erections. Here's my list:

1) Soy/Veggie burgers . Seems online they say this increases estrogen?
2) Lack of cholesterol like from eggs
3) Not getting enough calories . Seems that just being 1-2% under your ideal body weight can have large effect on killing libido
4) Over training , i.e by vigorous exercises like running. Has to be done in moderation. I suppose each person has to find for themselves where this moderation is...

eating sugar, too many carbs, too little quality protein/fats and not doing some kind of resistance training kills mine. Then there are purely psychological hangups that girls sometimes experience, but meeting so many amazingly sweet men in this hobby takes care of that.

My own aphrodisiac recipe for going wild all night long is adrenaline rush from meeting a stranger topped with engaging conversation over steak dinner!

Oh, and what you saw about soy is probably right, here is a link to the study- basically, it decreases sperm count and in some cases testosteron levels in mice

When I have performance problems, it's almost always due to fatigue.  It can ba a stressful day at work, not enough sleep the night before, skipping meals, etc.  So take care of yourself first--your provider will appreciate it and you'll have a better session.  

I try to book sessions on my days off, and ensure I get a good night's sleep.  I also cut back on my workout routine that morning.  Instead of running & lifting.  I'll usually just walk the track & do fewer weights.  Sometimes a provider will text me out-of-the-blue for a session on short notice.  Before I say yes or no,  I think about what kind of day I'm having.  If I'm stressed or sleep-deprived & running on caffeine, I'll politely decline. She'll have more fun with someone else that day.   I hope that helps.  --z

Try testosterone or natural products that increase your testosterone levels.  I get a hard on when I think about fucking and I'm 36.   Healthy, 10% body fat

I have a tanning bed so I am a bit lazy to actually lay out anymore. I noticed this past week when we went to the beach for 4 days, that I was really happy and horny when I got home. Vitamin D really affects my mood and libido. I can't imagine what it would be like to live in Alaska.

I can....lol.

EOM!

Amazing...just amazing

This is fucking...a natural bodily function.

What is wrong with you people?

Go and try it sometime.

You missed the most important one...STOP JACKING OFF

Send a little nookie with that UV.

is TOTALLY a reason too...

When I had first met and started dating my ex, he had not been with anyone in almost a yr and a half... he masturbated, thats it.

When we started having sex, he absolutely could NOT cum other than finishing off with his hand... I was like "ok well, I am sure it  wont be like this again"

NOPE
IT was pretty much the routine for almost a month or so.. I was getting so upset, we almost broke up.

Turns out, he had been so used to the feeling of his hand, it was literally impossible to finish off any other way...

I told him stop masturbating then and only get his sex from me...

Sure enough after a week or so, he was fine :P

Exhaustion/not enough sleep; the provider being a whole lot uglier and/or fatter than her old or fake photos; too many boundaries with too many NOs; the provider taking a call from her next client while you're trying to enjoy CG with her; the provider taking a call while giving you a BJ; the provider breaking stride when her pimp/handler calls for her to hand over his money NOW out of the first floor window. (No sh#t! This just happened to me today! ...and she's a TER girl!)