Cholesterol and glucose levels are things of the past for financial professionals...
According to a recent study by Takahashi et al. (2012) we should check traders for their levels of norepinephrine. It turns out that this chemical is crucial for the way we handle losses.
People with high levels of norepniphrine are "numb" or less sensitive to the pain of losing money. They could make better traders.
Those poor souls with high levels of the chemical suffer from loss aversion. They show more emotions for loses than gains.