Diabetes is estimated to affect 25.6 million American adults (1)
and 366 million people worldwide (2), and the numbers will
continue to increase to ~552 million by 2030 globally (2). Type 2
diabetes makes up >90% of all diabetes cases. Therefore, primary
prevention of type 2 diabetes through diet and lifestyle
modifications is of paramount public health importance. Recent
evidence suggests that the type of fat rather than total fat intake
plays an important role in the development of type 2 diabetes
(3,4). Studies have shown that a higher intake of MUFAs and
PUFAs and a lower intake of saturated fat and trans fat is
associated with a reduced risk of type 2 diabetes (4).
The relationship between regular nut consumption and type
2 diabetes risk has attracted a great deal of attention. Although
nuts are high in fats, most of the fats are MUFAs and PUFAs (5).
Nuts also contain other bioactive compounds that appear to
exert favorable effects on type 2 diabetes, including vegetable
proteins, plant sterols, dietary fiber, and antioxidants (5). A
previous analysis from the Nurses’ Health Study (NHS) reported
an inverse relation between frequent nut consumption and risk
of incident type 2 diabetes (6); however, the association with
specific types of tree nuts has not been reported.
Despite many commonalities in nutrient contents, substantial
variations in fatty acids content exist among nuts. For example,
compared with other tree nuts, walnuts are uniquely high in
PUFAs (47% in weight) (5), which comprise both n6 PUFAs
(38%) and n3 PUFAs (a-linolenic acid, 18:3n3, 9%). Because of
potential benefits of PUFAs in preventing diabetes, we specifically
investigated the association between walnut consumption
and risk of type 2 diabetes by using data from 2 prospective
cohort studies, NHS and NHS II, with 10 y of follow-up.
Please join here..
and 366 million people worldwide (2), and the numbers will
continue to increase to ~552 million by 2030 globally (2). Type 2
diabetes makes up >90% of all diabetes cases. Therefore, primary
prevention of type 2 diabetes through diet and lifestyle
modifications is of paramount public health importance. Recent
evidence suggests that the type of fat rather than total fat intake
plays an important role in the development of type 2 diabetes
(3,4). Studies have shown that a higher intake of MUFAs and
PUFAs and a lower intake of saturated fat and trans fat is
associated with a reduced risk of type 2 diabetes (4).
The relationship between regular nut consumption and type
2 diabetes risk has attracted a great deal of attention. Although
nuts are high in fats, most of the fats are MUFAs and PUFAs (5).
Nuts also contain other bioactive compounds that appear to
exert favorable effects on type 2 diabetes, including vegetable
proteins, plant sterols, dietary fiber, and antioxidants (5). A
previous analysis from the Nurses’ Health Study (NHS) reported
an inverse relation between frequent nut consumption and risk
of incident type 2 diabetes (6); however, the association with
specific types of tree nuts has not been reported.
Despite many commonalities in nutrient contents, substantial
variations in fatty acids content exist among nuts. For example,
compared with other tree nuts, walnuts are uniquely high in
PUFAs (47% in weight) (5), which comprise both n6 PUFAs
(38%) and n3 PUFAs (a-linolenic acid, 18:3n3, 9%). Because of
potential benefits of PUFAs in preventing diabetes, we specifically
investigated the association between walnut consumption
and risk of type 2 diabetes by using data from 2 prospective
cohort studies, NHS and NHS II, with 10 y of follow-up.
Please join here..
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