There are two different Nicks associated with Deadliest Catch who died, and their causes of death are different:
- Nick McGlashan died from a drug overdose. He overdosed in a Nashville hotel bathroom after taking a toxic mix of methamphetamine, cocaine, and fentanyl. McGlashan was 33 years old and was a deck boss on the vessel Summer Bay.
- Nick Mavar, another crew member and deckhand on the show, died from a heart attack. He was 59 years old and suffered the heart attack in Alaska, at a boatyard in Naknek. Mavar appeared in 98 episodes and had left the show earlier due to health issues related to a ruptured appendix and cancer.
Please specify if you want information about Nick McGlashan or Nick Mavar to clarify the context.