Difference in playing styles really. I do play on Eternity though too, which might make a difference in incomes and how long it takes to remedy health/happy issues. If nothing else the turn examples I might use are for Eternity so would be a lot lower on Snail. Don't know how much lower though.
....
Health: Is a serious issue in the first city until several techs down the line. With a bad start my initial city doesn't even start growing until 100-300 turns into the game, due to health issues. With a good start I can start growing right away, with +1-2 food per turn. Most are somewhere in-between. Since I also prioritize hammers and commerce in the Prehistoric Era I do build a bunch of +

buildings (which might change, or not, come the disease mod) so even when gaining more health from various sources I still occasionally get unhealthy cities, sometimes lasting a long time too. In the Classical Era in my current game I finally managed to get my 18 pop capitol healthy again via Church Civic, I have an extra 2

to grow into. It's basically been unhealthy throughout most of the ages so far.