Can you accurately tell how old somebody is?

Question

using DNA, Carbon Dating or some other testing technique?

Answer 1

Cut 'em in half and count the rings.

Answer 2

carbon dating - that's cute - maybe when they've been dead for a million years.  DNA, no, but just by looking at the wear on their internal organs you could probably get an estimate.

Answer 3

If you are talking about a living person who is cooperative with testing I think you could run a battery of tests including MRI of the brain, CT Scan of the lungs and liver.  Urine tests.   I think DNA is a set of genetic markers that would be the same at 88 as 18.   If it only an academic exercise carbon dating would be the gold standard.  I think the Alaskan discovery of the Air Man is just a testament to how accurate DNA can be with long preserved DNA.  Since 1948 as I recall the news article.  

Answer 4

I have heard that examining a person's bone structure will give you a close approximation of their age.