I've been mostly eating primal for about a year now and it's gone very well. But some questions are still lingering in my mind and I'm really starting to question if I should continue to eat this way.

Our ancestors evolved eating a particular way and what they ate is likely closer to what is best for our bodies. However, our ancestors only lived to perhaps 30 years old or so. Since we are living far past this age, how do we know that primal eating is optimal for us past the age of 30?

It's possible that certain types of foods don't take a toll on us until later in life and that our ancestors never reached an age where they would come across these issues.

In the end, is there any evidence that eating primal is optimal into our older years?