Do you have a better alternative that we should put our faith in? At least the government has a somewhat transparent and, at least in theory, non-profit motivated process for creating these guidelines. Virtually any other source, other than doing the research yourself, is going to be about selling you something. And the fact of the matter is, the government probably has the most incentive of any organisation to keep people healthy.

I actually find that this increases my confidence in government recommendations. The fact that the old guidelines are being updated given new research over the past decades is a wonderful thing to see.