Normal means common/usual/average behavior. Medical industry defines "normal" as average to include +/-sd (the central 96% of everything), as plenty good enough.
What does this have to do with excellence of health? Nothing. Best go for abnormally healthy & check actual lipoprotein values: LDL always in nmol/l, best <700, large-hdl in µmol/l, best >10. See NMR particle test & nusi.Org for diet.