Look at the photo below and tell us which of these two has PKU. A son or a dad?

Merged 1 post from Who has PKU?.

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You can’t tell from the outside

    9 days later

    I would pick the adult… just because I'm grown up myself, ☺️

    a month later

    PKU is the same as normal people😀

    If I had to choose one, I would chose Dad