This from The BBC News Magazine:

An experiment in The Gambia reveals the extraordinary importance of a mother’s diet.

New research reveals the extraordinary impact that your mother’s diet at the time of your conception has on the rest of your life, writes Michael Mosley.

A couple of months ago, I found myself in a small village in Keneba, in The Gambia, chatting to a perky 90-year-old, Karamo Touray, surrounded by his many children and grandchildren. Apart from a sore toe, he said he was in good shape and he attributed the fact he had enjoyed such a long and healthy life …

Source: The amazing significance of what a mother-to-be eats – BBC News