New research into which genes are required for male fertility could lead to a better understanding of the genetic changes that lead to male infertility, and to design strategies to overcome them.
Study finds 85 percent of men treated with testosterone therapy not suffering from classical primary or secondary hypogonadism, but adult onset hypogonadism.
Researchers say that smoking both marijuana and tobacco cigarettes while pregnant may be worse for an unborn child than either cigarettes and marijuana alone.
An international collaborative team of researchers reports finding two genes that are associated with increased odds for women bearing fraternal twins.
