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 is the riskiest sexual behavior for getting and transmitting HIV for men and women.
As for the reason, it's neither the penis nor the anus directly. They ...
Which medical specialist should be consulted for anal polyp?
A physician specialised in disorders of the colon, rectum and anus might be the person of choice.
This could be a proctologist (a physician specialised in proctology), or if this speciality is not recognised/available in your country, this could be a colorectal surgeon. In some cases (depending ...
Not sure if I answered this right:
The system begins in the mouth, where the pH of saliva is 5.7 – 7.0.
In the esophagus the pH is 7.0. The stomach pH is 1.5 – 3.0. In the
Duodenum (upper part of the small intestine) pH is 4.0 – 5.0, and in
the lower part of the small intestine (jejunum and ileum), pH 6.5 –
The reason for it:
Various terms exist.
Proctoscopy is a collective term for the examination of the anus, rectum and sigmoid colon (one or all of them).
Anoscopy is the investigation of the anus (only) using an anoscope.
Rectoscopy is the investigation of the rectum (only) using a rectoscope.
Sigmoidoscopy is an examination of the rectum and sigmoid colon using a ...
The premise is incorrect. The internal anal sphincter is in a state of chronic contraction and is not under voluntary control. When defecation occurs the sphincter relaxes allowing the passage of the rectal contents. Even when there is a colostomy there is still mucus produced which needs to be expelled on a regular basis. There is no disuse occurring.
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 viruses like HIV. If there are no breaks in this lining (such as from rough sex), the risk of contracting HIV from a single sexual encounter with someone with a ...
A couple regularly practices condomless vaginal sex (with other contraception methods). What new risks would them be exposed to when engaging on condomless anal sex?
You can contract the same sexually transmitted infections (STIs) via the anorectal route as vaginal (see Assi et al. 2014).
The only extra risk I can think of inherent in ...
The best data we have from Guangdong, China, is that household transmission is not 100%
preliminary studies ongoing in Guangdong estimate the secondary attack rate in households ranges from 3-10%.
So, this suggests that if either of you are potentially infected, then social distancing and other infection control measures will likely prevent the ...