Why would anybody think that diving wouldn't have long term detrimental effects on the human body?
The human body ages and aging is a direct effect of the wear and tear you place on your body. A skier develops knee problems due to the long term effects of repeated compressions on the knees, a boxer develops issues due to repeated blows to the head, a foot ball player develops back and neck issues due to repeated exposure to excessive stress on the body, an olympic gymnist develops pre-mature signs of aging due to the large stresses placed on a pre-adolescent body due to how young they start, a runner develops feet problems due to a life-time of repeated compressions to the ankles and arch of the foot...
why wouldn't you think that repeated exposures to pressures due to diving that the rest of the human population doesn't receive wouldn't have a long term effect on the human body???
Of course it does, everything you do effects the aging process, if it didn't humans would live to 1000 years old and their bodies would feel the same at 300 years old as they did at 20 years old.
To be honest, I can't tell if you are half joking, or serious. Since it looks more like you are serious, I would say that there are sports that are not health and long life sports ( basketball, gymnastics, boxing etc) due to stresses these sports put on us that we are not evolved to handle without some form of long term damage over many years.
Other sports, like reasonable distance hiking, or cycling if done properly, or swimming if done intelligently...can extend the high functioning lifespan of a person.... Cyclists in their mid 70's to 80's are often walking around with better posture and better fitness than couch potatoes that are 40 years old( and who never had an over-use injury in their life

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The "right" sports will enhance blood flow throughout the body, and prevent the muscle atrophy that you see in many old people that have not engaged in a fitness sport for many decades. Better brain function and better hormone and immune potentials are also a perk from engaging in the "right sports"... Again, things like cycling, but with the bike fit to rider properly, and without extreme distance riding ( the 100 mile a day crowd is damaging themselves) ..things like hiking and swimming, can be easily shown to have extreme health and longevity benefits.
Diving Was great to Frank Hammett, a strong diver into his 70's.....Also to Dr Ray MaCallister, who was a diving legend himself, diving into his 70's at least.
I think there are certain sports that are just bad for you. I would never advise anyone to go into gymnastics--look at the stats for gymnists that have major physical problems the rest of their lives...Or, each of us knows many basketball players, and how many of these have knee problems?
High impact sports can't be good for you for life....Some people have chosen wisely, some have not. Some got lucky
