Infections you get when you go shopping
, to the office, not when being onboard. And you will go shopping
sooner or later. I think we are getting fewer infections, but they seem more severe (age a factor, I think).
I think moving full time onboard made us way less healthy: there is a serious drop in physical activity on a boat (well, on an average one, I am not talking a 100' maxi). Less exercise = worse health
Your diet may get mundane, except if docked in a civilised place with good supermarkets. Worse diet = worse health. Probably a minor factor though. And you will likely eat slower, which will be a plus for your digestive system, I think.
Then again, in our case, it coincided with quitting our land jobs. This would kill most; modern people are not designed for idling. Alas, in our case, I think our nervous systems benefited from the move. But I have seen most cruisiers affected in the negative way: worried about the budget
, afraid of high winds, distressed about apparent loss of relevant comparative social background, etc. More anxiety = less health.
So to say, a mixed batch: likely worse physical health but possibly better mental health (yaho, ipieholamo, biririrtomotom ;-), in our case.
One side comment is that when you live aboard and are docked in a fine place, you can actually exercise more - many towns have outstanding sports facilities and many smaller locations have outstanding outback sports opportunities. Few chose this option BUT it is an option anyways.
Move da bum, forget about land fiendships and the check (not)coming and you may be fine.