Trust Begets Hormone

From Nature news:

Trust begets trust - and the hormone oxytocin, research reveals. People's oxytocin levels rise when they receive a signal of trust. Those with the highest hormone levels are more likely to be generous in return and so are more trusting.

I'm very trusting. Sometimes I trust people even when I know for a fact that I'm getting taken advantage of. Maybe my oxytocin level is stuck on high.