[melaniejs (OP)]

Paul asks:

What could we reconstruct about a human from their ashes? After the losses due to the incineration process, would it be possible to identify their diet for example?

Anyone here know?

[evan_au]

You could tell if they had tooth fillings or a metal rod to hold a broken leg together.

[RD]

If they had radiotherapy ... https://jamanetwork.com/journals/jama/fullarticle/2725673

[Sporteganmen]

The ashes are a mixture of burnt remains of bones, coffin material and metal objects (nails, dentures). After cooling, metal objects are removed from the dust with a magnet.