[anesmike]

What impressed me was the look of the older males in the pictures ; there was not much difference in the physical appearance between young and old.

[pavel_lishin]

It's hard to come to a conclusion without knowing their actual ages. If their healthy-looking elders are all of 45, and nobody seems to be much above that, then an entirely different conclusion could be drawn.

[gmiller123456]

There's also very likely selection bias involved. The photographer likely chose that photo because it was appealing, not to show a representative sample of the population.