Its more like if you drink to much alcohol you die from alcohol poisoning. I dont think there is such a thing as to high. Everyone is different and they can get panic attacks and feel anxiety and paranoia after they smoke which can bring on an undesireable episode. But too high? I think not. I have had my share of getting so riped everyone sounded muffled and such but i did not find it un enjoyable so i would not consider it too high, even though i couldnt do a lot of things like hear, understand people talking to me, or drive.