There is a 20-fold higher rate of HIV risk in the unprotected anal sex, than unprotected vaginal sex. Also, two studies further agreed that there is more danger from the use of lubricants, among both men and women who engage in receptive anal intercourse.

The use of such lubricants can even enhance rectal sexually transmitted infections (STIs) to three times. This was the result of a study by researchers involving 879 men and women in Baltimore and Los Angeles, between October 2006 and December 2008.

Also, another study revealed that compared to the dissolved salts and sugars found normally in a cell, these popular over-the-counter and mail-order lubricants contain much higher amounts than them. These products, thus pose a toxic and injurious effect on cells and the rectal tissue.

Also, many of these lubricants were found to strip away significant portions of epithelium, which is the layer of cells that serves as a protective barrier inside the rectum.

Such receptive anal intercourse is mainly practiced in over 90% of gay men, in the U. S. alone. Apart from men, the survey in Britain unveiled that around 10% to 35% of heterosexual women also engage in anal sex at least once.

The major problem is that the condom, used as a protection can only vaguely protect most acts of the anal sex, and thus it goes unsecured.