If it's just coding style I tend to leave it as it is. Coding style changes all the time. So I would end in rewriting it again in some months for no real reason. If I have to work on it (f.e. add something, fix a bug) I refactor it.

'Health' is a very wide topic. Could be physical health or mental health. Just a scratch or a strong pain. So there is no general advice for every health related problem other then: go and see a doctor! (and don't trust Google)