Here's another recent piece of evidence that cholesterol is not the most
important factor in heart attacks from coronary heart disease:

------------------------------------------------------------

Folate deficiency tied to heart risk

VIENNA, Aug 27 (Reuters) -- An apple a day may keep the cardiologist
away, according to a Greek physician. A study has found that
heart disease patients who have folate deficiency are more likely to
have a heart attack than those with adequate intake of the nutrient,
reported Dr. Lampros Michalis at the 20th Congress of the European
Society of Cardiology in Vienna.

Folate, a B vitamin, is found in fruit and green leafy vegetables.

Michalis and his research group at the University of Ioannina Medical
School studied three different groups of patients in Northern
Greece -- patients who had recently had a heart attack, those with
stable coronary artery disease, and a group of healthy people.

``We studied the difference in blood levels of cholesterol and vitamins
in these three groups of patients and found that blood cholesterol
levels or the subfractions of cholesterol seem to have little
association with the incidence of heart attack,'' he said. ``In
contrast, low
levels of folic acid were closely related to the occurrence of acute
heart attacks,'' Michalis said.

In patients with documented coronary artery disease who became folate
deficient, the probability of heart attack was 1.7 times that of
heart disease patients who had normal folate levels, according to the
report.
--------------------------------------------------------------------

According to my 1983 nutrition book, the highest paleo sources are dark
green leafy vegetables and liver and other organ meats. Oranges also
have a significant level. Nonpaleo sources include brewer's yeast, whole
grains, peas and beans, and beets.A higher amount of folic acid is
required in pregnancy.