There were many interesting parts of the movie. Most interesting to me was when one of the guys explained that we get addicted to certain emotional states (lets say stress for example). Now the hormone related to stress is cortisol. So when you're constantly feeling stessed out you have tons of cortisol flowing throughout your whole body. Cells become accustomed to this hormone after a while and begin to crave it, putting you in situations that tigger the hormone. Now over time cells begin building more receptors for this hormone instead of receptors for other hormones and even vitimans too. The cell divides and now you have a new cell that has tons of receptors for cortisol and less receptors for vitimans and other important nutrients and hormones. This is how you age. New cells have less proteins for skin elasticity, bone density, human growth hormone, etc. because the new cells are less attuned to that and more attuned to cortisol and whatever other hormones that correlate with the emotional states that your physically addicted to.
