Here you go for evidence. 
 
"A subset of rapists is driven by abnormal sexual cravings, and lowering their testosterone diminishes those cravings," said Dr. Fred Berlin, an associate professor of psychiatry at the Johns Hopkins School of Medicine. 
		
		
	 
Lowering testosterone also lowers violent tendencies in studies it has shown, not just rape. This would also be arguing rapists are not psychologically impaired so much as chemically imbalanced, taking responsibility out of their hands
 
 
	
	
		
		
			“a 1989 German study by Wille and Beier, for instance, compared 99 surgically castrated sex offenders and 35 non-castrated sex offenders about a decade after their release from prison, and found that the recidivism rate of castrated offenders was 3%, while the rate for non-castrated offenders was 46%. . . . studies by James Dabbs et al. (See Crime Times, Vol. 1, No. 3, Page 2 ) . . . strongly suggest a link between elevated testosterone levels and violence, delinquency, substance abuse, and prison rule violations.”
		
		
	 
How does castration link to substance abuse or prison rule violations? I am sure many who raped using their male member are unable to do so once castrated. Perhaps it is the psychological affect of castration that makes them lose interest. How is this proving, though, that a high sex drive causes rape? Also, castration does not affect testosterone completely.
	
	
		
		
			
- Pornography's Relationship to Rape and Sexual Violence
According to one study, early exposure (under fourteen years of age) to pornography is related to greater involvement in deviant sexual practice, particularly rape. Slightly more than one-third of the child molesters and rapists in this study claimed to have at least occasionally been incited to commit an offense by exposure to pornography. Among the child molesters incited, the study reported that 53 percent of them deliberately used the stimuli of pornography as they prepared to offend. [SIZE=-2]i[/SIZE] 
		 
		
	 
Most kids look at nude mags or porn at least once before 14. Heck, I know I read loads of books I probably shouldnt have in elementary school, and that's when puberty hits the strongest, so pre-teens and teens trying to sneak peeks ... well it's common. I seriously doubt that it is true that 1/3 of rapists or child molesters do so because of porn. They may try that as a scapegoat.
	
	
		
		
			The habitual consumption of pornography can result in a diminished satisfaction with mild forms of pornography and a correspondingly strong desire for more deviant and violent material.[SIZE=-2]
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[SIZE=-2]
[/SIZE] As the person becomes more jaded with porn and more experimental in viewing habits, this may be true. But how does this relate to creating rapists?
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- Pornography's Relationship to Child Molestation
In a study of convicted child molesters, 77 percent of those who molested boys and 87 percent of those who molested girls admitted to the habitual use of pornography in the commission of their crimes.[SIZE=-2]iii[/SIZE] Besides stimulating the perpetrator, pornography facilitates child molestation in several ways. For example, pedophiles use pornographic photos to demonstrate to their victims what they want them to do. They also use them to arouse a child or to lower a child's inhibitions and communicate to the unsuspecting child that a particular sexual activity is okay: "This person is enjoying it; so will you." 
		 
		
	 
Okay, it's pretty simple to me. As a straight person that is not a rapist or molestor, I have found some porn exciting while viewing it. Those interested in children will find child porn interesting. Those interested in rape will find forced played out rape scenarios interesting to view. Do I think it causes one or the other? No. It just is what they are drawn to.
As for using it for molestation purposes, sick people use many sick things to try and get children to bend to their will.
	
	
		
		
			Exposure to Pornography May Incite Children to Act Out 
Sexually against Other Children
 
Children often imitate what they've seen, read, or heard. Studies suggest that exposure to pornography can prompt kids to act out sexually against younger, smaller, and more vulnerable children. Experts in the field of childhood sexual abuse report that any premature sexual activity in children always suggests two possible stimulants: experience and exposure. This means that the sexually deviant child may have been molested or simply exposed to sexuality through pornography.[SIZE=-2]
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With kids that are young, this may be true. It is not the same to me by far as an adult rapist or child molester. My 9 year old cousin had my four year old cousin blow him in the closet when they were kids. I do not consider him a rapist or a child molester, just doing something he reallllly shouldn't have been. 
Kids try to take a lot by force. Remember when you didn't want to share toys and just grabbed them from someone ? I dont think some kids realize the great significance of some of this forced stuff. When I was 10 my friends younger brother, who was 8, blocked me in the bedroom everytime and said he would not let me pass without kissing him first. I always got away by pushing him down and was stronger. Is he a rapist? No. He is a kid that is not understanding enough of the adult world.
This statement above proves porn is not good for kids. They misunderstand what they see. I will give you that young children fed violent porn may be attracted to violent sex as they are older. I seriously doubt this causes all cases of rape or child molestation, though.
	
	
		
		
			In a study of six hundred American males and females of junior high school age and above, researcher Dr. Jennings Bryant found that 91 percent of the males and 82 percent of the females admitted having been exposed to X-rated, hard-core pornography. 
Over 66 percent of the males and 40 percent of the females reported wanting to try out some of the sexual behaviors they had witnessed. And among high schoolers, 31 percent of the males and 18 percent of the females admitted actually doing some of the things they had seen in the pornography within a few days after exposure.[SIZE=-2]
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But what does this have to do with rape? It is normal for kids to be curious on sex and different sexual positions and experimentation. If they see something in porn that looks exciting, they would be curious to try it. This is more on anti porn than rape though.
 
	
	
		
		
			Wide-spread economic fluctuations are not the only causes of rape in this context. Within any given community, poor men are far more likely to rape than middle- class and successful men:
		
		
	 
It's been said most serial rapists are those who have no power in their life, and cannot function well in jobs and relationships. Usually not school either. This does not cause them to be rapists, but is a side effect and part of their unbalanced personality. They lack power in their lives and try to find that power through forced sex.
	
	
		
		
			I noticed one person said that alcohol was a depressant. Well it all depends on the person. Alcohol dosen't always act as a depressant otherwise we wouldn't be seeing people get in fights and get obnoxious on alcohol. Alcohol in many people causes an increase in libido the same way cocaine and methamphetime does. If you don't know that, then you aren't living in reality.
		
		
	 
If a person is inclined to rape, I am sure the alcohol lowers their inhibitions more to where they are more likely to rape. However, they need to have rape in their heart in the first place. Most people who drink are not rapists.
And yes, medically alcohol is a depressant. Men seem to become more aroused but have harder times holding erection and [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse] through the use of alcohol. Depressant as a medical term mainly means relaxation/depressant causing.
	
	
		
		
			
-  The mystery is that a man is more sexually active than a female. It is because a man has the sexual desire 33 times a week as compared to woman who has the sexual desire of only 9 times a week on an average.
This means that on an average a man want to have sex around 5 times a day while a woman want to have sex just once in a day so a very high ratio of 5:1 prevails in the desire for sex. 
		 
		
	 
The connection of this between rape is WAY too loose to be taken seriously. You are saying that rape must be because of a high sex drive because most rapists are men...and men have higher sex drives than women. This reasoning does not exclude that there could easily be other reasons it is mainly men that rape, it is an assumption that is too loose with too many other scenarios.
	
	
		
		
			Gee, I wonder why men rape more than women? hmmmmmmmm. Women(these days at least unfortunately) are just as power hungry as men are now. Shouldn't female rape be skyrocking these days?
		
		
	 
Women and men are different psychologically when it comes to sex. It's possible to rape a man but a lot rarer for many, many reasons. I am not sure how the above shows cause for rape though, just a statement showing more men than women rape.
	
	
		
		
			About 40 percent of rapists report drinking before an intended rape. Groth said many do this as a way of blocking out their constant sexual thoughts, yet the alcohol only lessens their inhibitions.
		
		
	 
This doesn't make sense to me. I have never heard of someone wanting to drink so they will not think about sex. ?? Makes very little sense.
	
	
		
		
			Groth said drugs designed to diminish a person’s sexual urges and the need to rape have been in use since the 1970s. Depo Provera and Depo Lupron, when given to men in small doses, inhibits the production of testosterone and can stunt aggression.
		
		
	 
Again, this is circular.  I have always believed that high levels of testosterone leads to more violence in men, as it's been shown in many studies. I can't help but wonder why we don't give everyone with overly high testosterone treatment in prison for this and effectively reduce crime this way. Sigh, I suppose this would be too easy.
An overabundance of testosterone causes a feeling of wanting to dominate or control. Bullies, people who want to fight more, more inclined toward rape or violence as your study says. This is true. However, it is not an argument against what anyone else said. Because the high levels of T are creating the psychological imbalance.
  
	
	
		
		
			Again if sex drive had nothing to do with rape why would they be using drugs like this that reduce sex drive on criminal rapists? ever think of that?
 
http://www.sciencedaily.com/releases/1997/09/970927110900.htm
		 
		
	 
Again, these drugs are working because they are evening out imbalances in the body causing excessive aggression
	
	
		
		
			Now again, if sex drive has nothing to do with rape and sexual violence why is there a huge reduction in the percentage of future rape in offenders after they are castrated?
		
		
	 
You have shown several good reports of those with excessive levels of testosterone. A high sex drive is not the same thing. Otherwise most women would have virtually no sex drive. High testosterone creates violent tendencies in a person, the need to override others. Hence "The testosterone was high in the room" phrase when men are about to right. People joke on testosterone being high when a man gets into his fighting stance. This is not related to sex drive.