Transfats weren't commonly recognized as a problem until, what, 2006?
Both of the studies looked at periods ending in 2012:
The questionaires for the latter study are here. Click on the "Diet" tab in the table. The questions seem reasonable, but of course, they're not comprehensive, and people have to estimate (unless they're keeping a journal (and I think I read somewhere that many people do).
I think everyone agrees that it's not ideal, but it's a lot of data and they've tried to make the data as broadly useful as possible. The problems with trying to document everything about a diet, and try to have enough people eat a particular diet to test various hypotheses are obvious.
Presumably they have enough data to separate out trans-fats from saturated fats, at least in some cases. I would be surprised if those results were different from the general consensus now.
FWIW. :-)
Cheers,
Scott.
Both of the studies looked at periods ending in 2012:
This cohort study investigated 83 349 women from the Nurses’ Health Study (July 1, 1980, to June 30, 2012) and 42 884 men from the Health Professionals Follow-up Study (February 1, 1986, to January 31, 2012)
The questionaires for the latter study are here. Click on the "Diet" tab in the table. The questions seem reasonable, but of course, they're not comprehensive, and people have to estimate (unless they're keeping a journal (and I think I read somewhere that many people do).
I think everyone agrees that it's not ideal, but it's a lot of data and they've tried to make the data as broadly useful as possible. The problems with trying to document everything about a diet, and try to have enough people eat a particular diet to test various hypotheses are obvious.
Presumably they have enough data to separate out trans-fats from saturated fats, at least in some cases. I would be surprised if those results were different from the general consensus now.
FWIW. :-)
Cheers,
Scott.