Can FUT2 help with blood sugar?

The provided context contains no direct evidence linking FUT2 to blood sugar regulation. FUT2 is primarily known for determining secretor status, which influences vitamin B12 absorption and gut microbiome composition. While the microbiome can affect glucose metabolism, no specific FUT2–blood sugar association is supported by the given sources. Consumer DNA tests may report FUT2 variants, but their clinical utility for blood sugar management is not established. Without relevant studies in the context, the evidence grade is unclear. For blood sugar genetics, focus on well-validated loci like MTNR1B (rs10830963) or TCF7L2. Caution: Do not overinterpret FUT2 results for glycemic control.