The Birth Control Pill

Birth control pills work by providing your body with a dose of estrogen and progesterone that prevents ovulations. Like everything we put inside our bodies, it’s effect is not specific to the reproductive organs, but rather a generalized effect. It is also worth noting that hormones can work as neurotransmitters, affecting the brain and nervous system directly.

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Your Brain in Love

Out of 166 human societies that have been studied, romantic love has been found in around 90% of them. This serves as evidence that romantic love is not only a staple of the human condition, but beyond that it seems to have an evolutionary advantage. If not, it would not have evolved independently in different cultures.

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The Biology of Homosexuality

The hypothalamus regulates what we call the 4 F’s: fighting, fleeing, feeding, and mating. In the first half of the 1990’s, scientist Simon LeVay found a nucleus in the hypothalamus that has a statistically significant difference between sexes, the INAH3. Later on, he found that the difference has more to do with sexual orientation than sexual identity.

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