No positive health foods?

No, although from what I read in Clarify Health and make it work as expected · Issue #37446 · CleverRaven/Cataclysm-DDA · GitHub, there is some intention to cap the amount of negative health from food per day. Also note that a lot of negative health effect foods were changed to -1 (from -2 or lower).

This is a misunderstanding, the +health effects are removed, not hidden.