Stress
Toxic stress is a real thing, and that's not even part of the job-related stressors of being an actual toxicologist.
Simply put: yes. Toxicology is a stressful field. If you're in clinical toxicology, you're racing around a hospital, trying to see as many inpatients as possible. If you're in forensic toxicology, you've got local and federal law enforcement breathing down your neck, trying to make you produce results in superhuman speed.
By the way, forensic toxicology is nothing like CSI. Toxicology tests don't happen in the span of one commercial break, and each case will not be a baffling mystery surrounding the death of a polarizing but oh-so-glamorous public figure.
If you're planning to escape the stress of field, lab, or hospital work by going into academia and research, then we've got some bad news. You guessed it—there's stress there, too.
Yes, you get to wear a sweet tweed jacket with mismatched elbow patches when you're giving a lecture, but you'll also be expected to earn your keep by conducting research and producing results on the regular. And that expectation can be just as stressful as some FBI agent barking at you to make the science go faster.