The conclusions of the study showed that straight men and gay women both had "asymmetric" cerebral (front) parts of the brain, with the right hemisphere slightly larger than the left.

They found no differences in the symmetries of the cerebellum (rear) part of the brain.

They concluded that sexual preference could be directly linked by the amygdale, the emotion region of the brain.

The amygdale (corpus amygdaloideum) are almond-shaped groups of neurons located within the inner part of the medial temporal lobes of the brain (near the center of the brain). It is used by the brain to process and control the memories of emotional reactions.

Thus, the brain scans produced in the study found important structures in the brain that control emotion, mood, anxiety, and aggressiveness are similar between gay people and straight people of the opposite sex.

That is, the general structure of the amygdale in gay men was found to be similar to the structure found in straight women and, likewise, the structure of the amygdale in lesbians (gay women) was found to be similar to straight men.

This study and other similar studies have been very convincing at showing that sexual preference in humans is possibly determined at conception or developed while the fetus is developing in the mother’s womb.

In either case, it suggests that sexual preference is present at birth.

Why is this study different from other studies? Please read on.