An afterthought ... There is one photograph which you might consider showing your parents: on page 313 of "Nutrition and Physical Degeneration" by Weston Price, There is a photograph of four men, aged about 22, 18, 10 and 8. The first of these is a tall, broad, healthy man - what we used to call 'a magificent specimen'. The three younger brothers are progressively less well developed and stunted. The caption reads: 'The brother on the right was born before the white man's store was put on Badu Island, the three younger after. Note the change in facial form'. This is the most stunning 'picture worth a thousand words' I have ever seen. But perhaps I was just intellectually and emotionally ready for it when I saw it - three months into strict paleo eating and exercise after 30 years of - very healthy - vegetarianism. Hope this helps. Keith