There are a number of constitutional provisions that underlie the RH bill. But the most salient is what I would call the “Sanctity of Life” Clause found under Article 2, as a declaration of state policy:
Sec. 12. The State recognizes the sanctity of family life and shall protect and strengthen the family as a basic autonomous social institution. It shall equally protect the life of the mother and the life of the unborn from conception.
This provision does not mention the term “reproductive health” or any of its affiliate vocabularies. This is in the nature of a constitution.
