TG and diabetes mellitus: FT3 and HDL‐C are negatively correlated; one of the reasons may be that both are the result of autoimmune activation involving lipoprotein (a), and then the level of lipoprotein (a) is “reduced”, which is the determinant of new diabetes, accompanied by low circulating TC and HDL‐C, as well as autoimmune complexes involving thyroid hormones.