Medical advice doesn't in fact change every few years. It's pretty steady actually. Your analogy fails to make it's point in a comparison between nutrition sci

Medical advice doesn't in fact change every few years. It's pretty steady actually. Your analogy fails to make it's point in a comparison between nutrition science and medical science nutrition science comes out way way behind. If medical science did change as often as nutrition science and had as adverse an effect overall as nutrition science has had we'd probably all still be going to our local shaman instead.