The second study was performed in 1991 by Dr. J. Michael Bailey and Dr. Richard Pillard. They examined how widespread homosexuality is among twins and adopted brothers when at least one sibling was homosexual. Among other things, they found that 52 percent of the identical twins studied were both homosexual. From this they suggested that genetic makeup may be the reason so many identical twins were homosexual.8
The most familiar and equally dangerous of all sexually transmitted disease is AIDS. Here in the United States, this killer disease hits mostly males who engage in homosexual acts and intravenous drug users and their sexual partners.10 It's estimated that 30 percent of all 20-year-old males involved in homosexual behavior will contract or die from AIDS by the age of 30.11
This claim has serious problems. The fundamental flaw is that the immediate context shows the meaning of the Hebrew word yadah clearly to be sexual in nature. Just three verses later, the same word is translated "slept with," which Lot used when he offered his virgin daughters to the men of the city in place of the men in his house: "Look, I have two daughters who have never slept with a man. Let me bring them out to you, and you can do what you like with them" (Gen. 19:8).
Lot's offering of his daughters, as horrendous as it was, makes no sense unless we understand that the intentions of the men of Sodom was sexual rape. Lot had no reason to think the men would merely want to question or get acquainted with his daughters. As horribly wrong as Lot was, it's clear that he thought the men might be willing to settle for sexually violating his daughters.
One of the major shortcomings in this sort of speculation is that there is nothing in the surrounding context of these passages that justifies limiting the meaning of these verses to homosexuality involved with pagan worship or to pederasty. The meaning certainly included such activities, but there's no evidence to suggest that Paul was referring to these activities exclusively.
Conversely, the context shows, for example, that it's impossible to restrict the meaning of Romans 1:24-27 to pederasty, given that Paul referred to female homosexuality in the same way as male homosexuality: "Even their women exchanged natural relations for unnatural ones. In the same way the men also abandoned natural relations with women and were inflamed with lust for one another" (vv.26-27).
It's evident that Paul didn't restrict the meaning of this word to certain kinds of homosexual behavior. Even ancient Greek writings used it in a broad sense that would include all homosexual behavior.14 Therefore, according to Paul, all forms of homosexual activity are sinful.