You're being intentionally evasive. You made a really simple statement, which I'm asking you to substantiate: Fitness and health are one and the same, actually.
This is a philosophy forum, where people should be willing to show their working. If you don't want to substantiate your claims with something more valuable than anecdote, then you can't expect anybody else to believe you, and the following question should absolutely be ringing in your ears: how do I know what I know?
As somebody who's very health-conscious, and has been involved in crossfit, a couple of endurance events, martial arts, olympic lifting, (very) basic acrobatics, yoga, rugby, etc. over the years, I agree that what I define as 'fitness' promotes vitality in life, and massively increased function. Does that mean that the fact that I don't have any medical complaints proves that my own training and diet means I can't get cancer? No, that would be unscientific.
Further, you still haven't defined 'healthy' and 'fit', as requested (and required, if we're to evaluate your claim), so answering your final questions is pretty meaningless. But since you asked:
I can't see any symptoms of ill-health from looking at your body, as somebody with zero medical training (beyond first aid). But obviously, people with a similar physique to yours have died from cancer, and any other number of serious conditions. So I don't think that's a relevant question.
Do you look fit? You haven't defined fit. I have my own standards for fitness for men, which I think demonstrate a decent level of athletic ability and preparedness, such as minimum 2x bodyweight back squat and deadlift for 5, at least bodyweight power clean > front squat > OHP (separate movements for the OHP, but thruster is still a decent standard, as it shows integrated movement, which is probably more valuable than strength). While size does not equal strength, and I'm not trying to be judgemental here, but I haven't met many people with your build who can perform these. I'm guessing you're around 70-75kg? So that would be 140-150kg backsquat and deadlift for 5. I'm also a big fan of a strong core being an indication of some athletic performance, so L-hangs for 60+s, German hangs for some shoulder mobility, etc.
Cardio is obviously much harder to estimate, short of measuring VO2 max. And then what good is a solid VO2 max without mobility and the requisite neurological training to perform at some level? That's why I tend to have standards based on function, as that's what fitness is for me. As a crossfitter, I presume you have quite similar standards. In terms of your own fitness, I obviously can't estimate your cardio at all from looking at you.