don’t you have your numbers mixed up? Cannell recommends 4000iu, and the FNB 125-200 nmol/L?????
Cannell recommends 5,000IU.
From post #42: "The FNB concluded that serum 25(OH)D levels above approximately 125–150 nmol/L (50–60 ng/mL) should be avoided, as even lower serum levels (approximately 75–120 nmol/L or 30–48 ng/mL) are associated with increases in all-cause mortality, greater risk of cancer at some sites like the pancreas, greater risk of cardiovascular events, and more falls and fractures among the elderly."