I got another tattoo yesterday by Nille at Salvation Tattoo, a serotonin molecule.

Serotonin is both a classical neurotransmitter and a signaling molecule. To simplify things, it is a brain chemical that also can be found throughout the body (primarily in the digestive system). Its functions are among other things to help control happiness, sleep, aggression, impulsiveness, appetite, sexual lust, body temperature and metabolism. Due to a condition of mine, I have lower serotonin levels than most people. To fix that, I decided to add some of my own. 😉

I have stylized the molecule by replacing the letters HO, HN and NH2 with rings. Aside from that, I have thickened the lines and changed the angles on the inner parts slightly. If this should be entirely correct, I should replace the corners with rings as well, as they in this case represent carbon. But I chose style over substance, everything is still explainable and it looks much better this way. Big thanks to Micke Lind for the input on the molecule design!

Tattooing the elbow is probably the most painful ink I’ve done so far. The hearts on my inner upper arms did hurt a lot (and longer), but there were more twitching involved when doing the elbow.