Been a pilot for 45 years and a suicide counsellor for 12 years. I offer a few pertinent facts:
1. Men are 3x more likely to take their own life than women.
2. When men kill themselves, they usually use violent methods such as firearms, hanging, jumping off a high building/bridge, crashing a car etc. Women, by contrast would much more typically take an overdose.
3. Men are notorious for hiding suicidal feelings until it is too late. Women typically wear their heart on their sleeve - anyone around them is likely to see the signs that they are becoming mentally unstable and self destructive.
Time for more women on the flight deck?