What the Yuck: Man, he smells good...
June 10th, 2011
03:33 PM ET

What the Yuck: Man, he smells good...

Too embarrassed to ask your doctor about sex, body quirks, or the latest celeb health fad? In a regular feature and a new book, "What the Yuck?!," Health magazine medical editor Dr. Roshini Raj tackles your most personal and provocative questions. Send 'em to Dr. Raj at whattheyuck@health.com.

Q: Is it true if a guy smells good to you that means you're biologically compatible?

Like most things involving men and women, it's complicated!

There have been several studies that showed that people are attracted to the smell of members of the opposite sex who are somewhat genetically dissimilar in terms of their immune-system genes, and are turned off by the odor of those with very similar immune-system genes.

Being genetically unlike in this way has a biological advantage for the kids because theoretically they'll have both sets of genes and therefore a more diverse immune system.

But this theory has yet to be proven, and there are so many other factors that go into compatibility, I wouldn't put too much stock in this as a way to find your perfect match.

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