•Total Safe Intake, TSI
1500 ug/day
•
•UK adult diet provides on average 700 ug/day
•
•Supplements should usually be limited to 800 ug/day
none in pregnancy
•
•% population intakes >TSI
- adults (19-64yrs) M
9%, F 4%
- elderly (65+ yrs) M 11%,
F10%
•
•High intakes can occur from:
- food – liver, very
high dairy
- supplements
multivitamins
and cod liver oil