A complex network of ethico-legal rules makes it difficult for health researchers in South Africa to lawfully recruit adolescents to the kinds of sensitive studies where it may be ethically appropriate to proceed without notifying parents or obtaining parental consent. This article responds to a recent proposal to amend the blanket requirement for mandatory parental consent presently contained in section 71 the South African National Health Act 61 of 2003 [NHA]. The proposed amendment is intended to bring the NHA into alignment with South Africa's 2015 Department of Health Guidelines on Ethics in Health Research by permitting greater flexibility for a health research ethics committee to waive parental consent, and permit adolescents to consent independently. A lacuna in this proposal is highlighted with reference to the requirements of South Africa's Protection of Personal Information Act 4 of 2013 [POPIA]: Even if the NHA is amended as proposed, the goal of aligning South African law with prevailing ethics norms in South Africa would not necessarily be attained, as parental consent may still be required by POPIA. This article investigates whether this goal (of aligning the law with ethics) can be attained in a way that is compliant with POPIA. It is concluded that this is indeed possible in a number of ways, and that the best way to attain this goal is by requesting the South African Information Regulator to issue a guidance note to the effect that all health research projects that are approved by institutional health research ethics committees are to be regarded as being in the public interest, which would qualify such health research projects to be exempted from POPIA's consent requirements.