There are categories of health professionals -i.e. Dentists & psychiatrists, etc. - that have been know to have a higher percent rates of suicide. The dentist for example is dealing with the area of the 5th chakra. It is a chakra that is well know to be connected with much repression of energy. There is something to practicing for certain individuals the meditative exercise of placing a golden protective aura around the body combined with use of the breath. Taking a shower after being in contact with someone who is know to be a "difficult case" having "issues" can also help.
Awareness alone can be enough. It certainly helps to know that there are certain types that leak their own life energy and hence, unconsciously suck this energy from others.
For body workers it is of utmost concern to always take care of oneself first - To prevent the tensions that are held within the body of the client of being infused withing the therapist himself. One must give their therapy sessions securely centered in awareness - of what is happening with their own bodies. The sessions should be seen as a two way street scenario.