I always appreciate these people who manage to save money by making a lot of sacrifices. But I think first of all they should focus on their basic needs and then its okey to go ahead with rest of money. If anyone compromise with healthy issues or others major things in their life for money, then he or she will must have suffer in long runs if good to investment or money. Not don't ne so greedy, sometimes greediness could ruin a life rather then making anyone successful.
This is not just talking about investing or talking about health and others, this is talking about the risks that may arise in the process of a person in investing because of improper actions where his needs are still very questionable let alone just recovering from his illness, in addition to financial conditions is a determinant of whether or not we can invest.
Suppose we invest when our income is very bad, of course the investment made is the wrong action because it will result in if we invest in losses and urgent needs it will be very likely to take investment money in a state of loss, and that is the most feared in this situation.