1. 'Better': fewer infections, better energy levels, better quality of sleep, healthier % body fat, fewer chronic ailments
Originally Posted by sdubrul
2. They can't unless they eat a ton of seaweed and that can screw up the thyroid.
3. No. Cats are carnivores.
There are lots of epigenetic changes in our genome which affect which diet best suits us.
BBC News - Study links womb environment to childhood obesity
Some of these epigenetic factors are determined by what our grandparents ate, others to the environment of our mother's womb. We can drive some epigenetic modification through changes in lifestyle through a gene-environment interaction. There's clearly a lot more research required before we'll have any definitive answers and it's a hot topic right now.
I believe there are genomic factors too, especially regarding genes encoding the immune system (which relate to food intolerances).
Some metabolic disorders and differences are manifested in the mitochondria. These have their own genome (DNA) and are inherited from our mother via her egg cell. Mitochondria are the part of the cell where energy is generated from the end-products of metabolised fats, proteins, carbohydrates and alcohol. They are analagous to symbiotic microorganisms living within our cells (they're believed to be of bacterial origin).
So, it's complicated. I believe there's a lot of scope for adaptive variation - which is backed up by observations of nutrition in various tribes all over the world. However, like you I believe that very few people if any are well adapted to eating unsprouted wholegrains, or to veganism or vegetarianism.
Last edited by paleo-bunny; 03-19-2012 at 09:52 AM.
F 5 ft 3. HW: 196 lbs. Primal SW (May 2011): 182 lbs (42% BF)... W June '12: 160 lbs (29% BF) (UK size 12, US size 8). GW: ~24% BF - have ditched the scales til I fit into a pair of UK size 10 bootcut jeans. Currently aligning towards 'The Perfect Health Diet' having swapped some fat for potatoes.