Genki in Japan means more than health. Energy, well-being, and health.

Informal = "genki?" 

instead of the formal "genki desu ka?"

 https://www.japan-talk.com/jt/new/genki

According to them, "genki" means "energetic, lively, and healthy". Saying energy, enthusiasm, and health are all rolled up into one concept in Japan's culture. 

According to them, Japanese don't like to talk politics, going for the "it can't be helped/accept your fate" thing. Interesting: Shoganai. 

https://www.japan-talk.com/jt/new/7-most-important-Japanese-words