Riverstone - Ascension much more than Enlightenment affects the body. Remember that we are a body-soul union, and as we move up the consciousness scale, more of our body and soul are consciously available to us, instead of us being at the mercy of our genetics and circumstances.
Even before enlightenment, we can learn all kinds of techniques to affect or overide our body. With enlightenment, then we have released all of the conflict that was contained in our etheric bodies, that was affecting our physical body (i.e. judgments, guilt, shame, self negation - all the mind chatter). But I still know that we can be affected by genetics and epigenetics (tendencies that come up from genetics because of stress). One guy I know is perfectly enlightened, and still gets skin cancer. So it doesn't mean we are totally unaffected by our genetics, just less.
With ascension, you have totally mastered the physical body and moved beyond the affects of genetics.
There are a ton of ascended masters already out there, and more occuring all the time! Ones that you might know of: Jeshua, Mary (his mother), Buddha, Quan Yin, Moses, St Germain, Lanello, St Katherine, Isis, Horus, Yogananda - pick a culture and timeframe.