3/ more glucuronidation genes, which are involved in metabolite excretion, sometimes in a reversible process - are there some more alternative storage forms of vitamin D? 📦

2/ lots of lipid/steroid metabolism genes, more links with BMI and likely interactions - another potential seasonal effect? 🌤️

1/ association with circadian rhythm genes suggests a link between vitamin D status, circadian rhythm, and an innate seasonal rhythm - would be very cool to investigate wether/how humans have innate seasonal cycle! 🛌🏼