I have a play list in youtube, of several music videos. When I was “well” (eating little carbs) a few years ago, I had a strong feeling on those songs.
Then, I started to eat more carbs and gain weight, and I felt that my feeling towards that music was much lower. I did not know why, and I felt bad about it.
Today I have started playing the music, and my feeling towards it is at 100% again.
Is this a known effect? Or just a N=1?