Estrogen, known as a female hormone, is actually produced by both men and women. It’s the most potent of the steroid hormones. When it is not metabolized by the liver and eliminated from the intestine quickly, it can build up…

Our human bodies are made up of stuff called “tissue”, which comes in four types. Neural tissue electrifies and provides the spark that allows us to move and act. Our covering of skin and the surface of organs is called…

Human beings are built to survive, and that’s a good thing. The problem is that survival skill requires us to be acutely aware of danger. Unfortunately, the sensitivity to threat can sometimes lead to a sense of pessimism, which can…