Many things go into the mix to make a healthy relationship: Trust, understanding, a shared sense of humor and a love for all things Joss Whedon (well, that might just be me), a sense of shared values, a need to grow and learn together and a dose of of genetic data.
Researchers have identified certain genetic markers that make couples work well together.
The first study was in 1995 by Professor. Dr. Wedekind at the University of Bern in Switzerland, and looked at attraction and pheromones. Wedekind found that couples with “dissimilar HLA genes” tend to have longer, happier relationships and potentially healthier children.
So what is HLA? The gene that controls the immune system and pheromones, among other things in the body.
Read the full, original story: How to Date Based on Your DNA