Natural supplements are effectively marketed as medication (despite a label indicating the FDA has not evaluated the claims). Many people I have spoken to genuinely believe natural supplements to be actual medicine based on the way they are marketed.
The issue with incorrect diagnosis is might lead to incorrect or ineffective treatments. "Natural supplements" are the incorrect or ineffective treatments themselves: the unregulated claims they make is very similar in substance and effect to the quasiregulated claims that 23andme is making.
The issue with incorrect diagnosis is might lead to incorrect or ineffective treatments. "Natural supplements" are the incorrect or ineffective treatments themselves: the unregulated claims they make is very similar in substance and effect to the quasiregulated claims that 23andme is making.