Genome-wide association studies have identified a consistent genetic correlation between single nucleotide polymorphisms associated with higher serum vitamin D levels and variants associated with increased adult height.

Study: Evidence for involvement of the vitamin D receptor gene in idiopathic short stature via a genome-wide linkage study and subsequent association studies.

This study found that a gene involved in how the body uses vitamin D is linked to being shorter, which supports the idea that vitamin D-related genes also affect how tall people grow.

Study: Causal relationship between vitamin D and adult height: A bidirectional Mendelian randomization study

This study used people’s genes to show that those born with a natural tendency to have more vitamin D in their blood also tend to be taller as adults — meaning vitamin D likely helps you grow taller, not the other way around.