i took the test myself as well, but the diet recommendations contradicted those of dnanudge. so, a little confused, i took a trip to a nutrition genetics lab. what do you keep in the fridge? it's full of saliva. it is full of saliva. dr yiannis mavrommatis specialises in nutrition genomics here, and instead of offering me a coffee, decided to test my genes as to whether i should have one or not. you can deposit your sample and just return it back to me. it takes longer than you would think to fill a container with saliva. i've only got to get it up to there. done. the problem is not this part, we can do this part quite well. the challenge is to find an area that is meaningful and we have a lot of science behind it. so there is no consensus as to which dna areas we need to analyse, so company a may have their own genes that they believe are the most important ones and company b may have a different