system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout - New Vegas, Old World Blues] Between Robert House's setup, the Trauma Override Harness and whatever the Think Tank have become, how can I extend my natural lifespan and/or cheat death?
gpt
Via removal of the brain/head and storing it in a medi-gel resivoir, there are many people who have survived over 200 years. (See robobrains, Think Tank) Brains in medigel has the disadvatage of having your brain removed, which has problems, such the surgical procedure possibly failing, your brain being damaged, becoming brain-dead, and cognitive degeneration. The brains in robobrains were from death row inmates and people from chineese internment camps. The brains were just efficient processors for the robots, they were wiped and tortured so that the personality of the "donor" would not come back. Brains thet were not wiped properly seemed to suffer from depression, sucidal thoughts and actions, and a variety of other conditions. It will keep you alive but not nescessarily sane.

An alternative is Mr House's setup. You are kept in a coffin hooked up to machines for 200 years. This of course will keep you alive, but you will not be healthy and happy. You will look like and have the immune system of a 200+ year old, with 200 years of atrophy. You will be alive, sane-ish, but requres an extensive setup and lots of go-betweens for interacting with the world.

Cryogenics are another choice. You freeze yourself and have a computer or timer decide when to release you. Bonuses: you will be perfecrly preserved, and can have some fun VR while you are waiting, but things might not ever get better and the life support could fail.

The trauma override harnesses are just suits with dead bodies in them. They were made to carry wounded people to medics even if they were unconscious, but they also work when the person is dead

Becoming a ghoul could also work, but you could go feral. 

FEV can make you live much longer, but you will likely loose intelligence and be horribly deformed.