They just always seem to be way out of date.
I ignored the advice its safe to have x amount of units a week and I had nothing.
I ignored the advice to avoid nuts while expecting and for the first year. Reports say this could increase risks of allergies.
Both of these the advice has / is changing and I feel very vindicated.
They are still pushing low fat stuff, loaded with sugar and artificial sweeteners. I'm sure this advice will be outdated in a few years.