Just had a bright idea. I sent an e-mail to NASA(sadly, the "send suggestions to NASA" page did not work, so I had to send it to NASA via general enquiries. Basically, I made 2 suggestions:-
1) Send live small animals up into space(ones with prolific breeding capacity), have them put into a small transverse centrifuge so as to simulate 1 Earth Gravity(1G). Do the same with plants(eating sprouts would be fine).
2) Eat raw animal foods and raw plant foods. I gave several justifications such as that, while there is little scientific data supporting raw food consumption due to foolish biases, there is a huge amount of scientifically validated data on the harm done by cooked food consumption.The clincher was a study showing that bone-loss occurs at a greater rate in tandem with the amounts of advanced glycation end products(AGEs) in the bones and body,(AGEs are one of the 7 or so types of heat-creates toxins found in cooked foods so far). The idea being that an astronaut who had been on a 100% RVAF diet for a few years beforehand, and then in space,would lose bone-mass at a slower rate than astronauts on less healthier diets.
I also recommended that a NASA biologist read this rather than any NASA nutritionist as I seriously doubt that a nutritionist/dietician could possibly be unbiased re these suggestions.