27
votes
Accepted
How many times a week is masturbating good for health?
Let's get a few things out of the way...
Sex is normal (1). Sexual desire and arousal are normal (2). Asexuality is normal (3). Masturbation is normal (4),(5). There is no problem whatsoever with ...
- 6,931
9
votes
How much body fluid required to actually transmit a sexually transmitted disease (STD)?
To get even close to how much bacteria there are in vaginal discharge and penile discharge, we look at how are they diagnosed/detected laboratory wise.
Gonorrhea is caused by Neisseria gonorrhea a ...
- 828
6
votes
What is the life expectancy of a sperm in dried semen?
There's no need to worry. Getting pregnant isn't that easy.1
It's unlikely that sperm survive for 2 hours.
On a dry surface, such as clothing or bedding, sperm are dead by the time the semen has ...
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6
votes
Having sex with someone who's had many sexual partners,
This is a very good and important question, not only for you but for other people as well.
As people have said in the comments, YES it can be potentially dangerous to have unprotected sexual ...
- 476
6
votes
Accepted
Is ShockWave Therapy Useful For ED or not?
The results of our studies, which also included a double-blind randomized control trial, confirm that LI-ESWT generates a significant clinical improvement of erectile function and a significant ...
- 828
6
votes
Accepted
Are contraception effectiveness percentages per-user or per-use?
Neither.
The percentages given are the percentage of couples using that method who will conceive over a year. So if 100 people use that 98% method, 2 will get pregnant each year.
Here is a page ...
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6
votes
Accepted
Which is the average infection rate of STDs via oral sex?
Probably the best evidence around this is for HIV, which is neatly summarised in table 2 of the BASHH (British Association for Sexual Health and HIV) guidelines, where the risk for insertive or ...
- 806
5
votes
Accepted
Are there reasons why fertility awareness methods of family planning are not widely promoted?
Fertility awareness methods are slightly different from the others in that they require you to have self control and not have sex when you might otherwise want. Many people don't like to do this. In ...
- 314
5
votes
What's with anal sex and HIV?
Yes, anal sex is the most risky method of sex with the highest possible chances for HIV infection.
This is clearly said in the official Centers for Disease Control and Prevention website:
Anal sex ...
- 1,271
5
votes
Accepted
Anorgasmia with SSRI and SNRI prescriptions
First of all, anorgasmia can be either a primary effect caused by depression itself, along with decreased libido. But then it may also be a side-effect of the medication itself, adding to the ...
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5
votes
Lack of sex drive
See a doctor. Low libido (the medical term for sex drive) can have medical causes. Two examples among many potential causes are low testosterone or depression.
Also Sex therapy (a type of couples ...
- 5,814
5
votes
How can someone that is HIV positive not be contagious?
Your back-of-the-envelope calculations seem to be off in estimating the extent of viral load reduction in a treated versus untreated person as well as the risk of transmission for unprotected, ...
- 14.4k
4
votes
Can low libido be a side-effect of schizoprenia medications?
Yes they can. Co-occurring conditions like depression may also contribute to low libido.
This is a good article that discusses the details.
The mechanisms by which antipsychotic drugs may cause ...
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4
votes
At what point would blood loss impede the ability to achieve an erection?
Erections aren't binary, they have a gradient of turgidity; but going by your statement "completely impossible," then I will assume that for your novel you want to understand what would prevent any ...
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4
votes
Why is HIV singled out from other STIs?
Question: If HIV is an STI, then why is HIV often listed separately, for example:
HIV & Sexually Transmitted Infections Fact sheet
STDs and HIV – CDC Fact Sheet
What You Need To Know About the ...
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4
votes
Accepted
Why is HIV singled out from other STIs?
This is a good question, and although as you correctly state that HIV is an STI (see STI vs STD vs Sexually Transmitted Virus?) there is a difference with HIV which is one reason why it may be ...
- 6,236
4
votes
Why do age-related DNA transcription errors not manifest in children as readily as their parents?
Older paternal (and maternal) age in fact is associated with some increase in disease, though at fairly low rates.
Cancer is largely a disease of probability. One does not need to have mutations in ...
- 14.4k
4
votes
Accepted
What's the equivalent of “premature ejaculation” medical condition in female sexual health?
It is always hard to prove a negative, but I don't think such a condition exists.
Premature Female Orgasm appears to be the term you are looking for, and apparently there has been a patent filed by ...
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4
votes
Accepted
Is sexual desire after a vasectomy diminished?
There has been surprisingly little research on the topic, and as might be expected given the lack if new data, recent studies have not supported a general libido lowering effect of vasectomy. A study ...
- 226
4
votes
Accepted
Do emperical data on genital forces/pressures produced during arousal and sexual activity exist somewhere?
I think this may be what you're looking for on the woman's side.
Vaginal tactile imaging (VTI) allows for acquisition of bilateral pressure patterns along the entire length of the vagina. [...]
Data ...
4
votes
Accepted
Is there any statistical overlap between people who identify as non-cis and people who have an unusual number of sex chromosomes?
Fernández and colleagues appear to have addressed your question (2018. PMID 29892954):
To investigate the possible influence of karyotype on the etiology of Gender Dysphoria we carried out the ...
- 3,323
3
votes
What's with anal sex and HIV?
Major Edit: Corrected extremely incorrect stats
The vagina, being "designed" (evolutionary speaking) for intercourse, has a lining which is reasonably good at fending off pathogens, particularly ...
- 139
3
votes
Drug to prevent sexual desire?
Sexual function is human biology. It is complex with aspects that are psychological + neurological + hormonal + vascular + etc. It's all interwoven.
Therefore, beyond chemical castration* (which ...
- 5,814
3
votes
Accepted
Can Viagra cause a spontaneous erection?
Viagra does not cause a spontaneous erection. You have to be sexually stimulated in order for it to take effect. This particular film scene would suggest that Franco was sexually aroused by the 'chase'...
- 91
3
votes
How can I detect condom failure?
I'm afraid the answer is no, you can't know in advance if the condom is going to break.
As far as I can tell, and from my own personal experience, most condom failures are not due to the condom ...
- 1,271
3
votes
How long do you have to take an SSRI for before PSSD becomes a risk?
This is currently impossible to answer definitely. There is further a difference between 'could become a risk' and 'will likely be a risk'.
Only now are even the warnings about the long established ...
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3
votes
Maximum time for symptoms of pregnancy to show up?
9 months / 40 weeks. Multiple stories have been printed over the years of women who discovered they were pregnant only while delivering a baby. Typically these women are overweight and have irregular ...
- 3,989
3
votes
Is Anilingus healthy?
According to Jack Morin, the author of
Anal Pleasure and Health: A Guide for Men, Women and Couples
anilingus can actually be beneficial (point 10 of '10 Rules of Anal Sex').
Anal sex can be ...
- 1,511
3
votes
Is an open-ended vasectomy easier to reverse than a closed vasectomy?
With all these vasectomy questions, you might be best off trying to interview a licensed urologist. You're correct that there appears to be very limited clinical research in humans regarding vasectomy ...
3
votes
Accepted
How is nominal width of condoms related to penis girth?
The root of this confusion is the relation between penis circumference and condom width. Intuitively, it seems logical that the condom width equals the diameter of the penis, which is 3.14 (pi) times ...
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