Aka You seem to be implying that diet is the main factor in CHD, but it is not so simple.
There is controvery about the role of dietary fat in CHD
and the WHO says this:
"The most important behavioural risk factors of heart disease and stroke are unhealthy diet, physical inactivity, tobacco use and harmful use of alcohol. Behavioural risk factors are responsible for about 80% of coronary heart disease and cerebrovascular disease " www.who.int/mediacentre/factsheets/fs317/en/
Heredity is another risk factor, and some scientists believe that infection has a role too. content.onlinejacc.org/article.aspx?articleid=1124505
"It is also being recognized that the traditional risk factors, such as smoking, dyslipidemia, hypertension and diabetes mellitus, do not explain the presence of coronary atherosclerosis in a large proportion of patients. We believe that in certain genetically susceptible people, infection with very common organisms, such as Chlamydia pneumoniae or cytomegalovirus, may lead to a localized infection and a chronic inflammatory reaction."
There is also some evidence of a link (not a causal relationship) between periodontal(gum) disease and coronary heart disease.
www.adajournal.com/content/137/suppl_2/14S.full
I think the point is that when there are so many factors involved in a complex condition, it is not appropriate to increase regulation, which always increases costs which are then passed on to the consumer, and which may have very little beneficial effect, if any.