In his One Minute Consult, Consumer
Reports on Health has a message for us from Richard D. Mattes, M.P.H., Ph.D.,
R.D., professor of nutrition science, Purdue
University , West Lafayette , Ind.
“At one time nuts were viewed as problematic
for weight gain and heart disease. But epidemiological
evidence almost unanimously shows that people who consume nuts more frequently
weigh less than people who don’t. These
findings were surprising and prompted a number of clinical trials. They found that adding tree nuts as well as
peanuts to the diet did not lead to the theoretical change in body weight based
on their energy content. There are
several likely reasons for this. First,
nuts are very satiating, so consequently people eat less food than at other
times. This offsets between two-thirds
and three quarters of the energy.
Second, people often chew nuts thoroughly, so somewhere between 5 and 15
percent of the fat they contain is not absorbed. Third, although this is less substantiated by
research, consuming nuts regularly may elevate energy expenditure.”
There
is very strong evidence that regularly eating nuts reduces cardiovascular risk
factors like elevated LDL (bad cholesterol) and triglycerides. Nuts are also rich sources of other nutrients
– walnuts of omega-3 fatty acids, almonds of Vitamin E, and peanuts for
protein. They are also high in
fiber. The government has approved what
is called a qualified health claim for most nuts, based on their effect on
cardiovascular disease risk. It covers
almonds, peanuts, pecans, pistachios, and walnuts, but not cashews, which has
not been studied as well as the others. If
you wonder about the right amount of nuts – the recommendation is to eat l.5
ounces a day. An ounce of almonds fits in
an Altoids mint tin, and the pack of peanuts you get on airplanes is usually
about half an ounce. The work we’re
doing now suggests that whether they are honey-roasted, salted, or raw doesn’t
adversely affect their health benefits.
For safety sake one can rub off most the salt if your doctor has warned
you about getting too much salt.
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