MORE NEWS ON AFRICAN WALNUTS
http://nationalweekender.net/?p=4953
Walnuts have innumerable health benefits.
In
Nigeria, it is called Asala or Awusa in Yoruba, Ukpa in Ibo, and Okhue
or Okwe in Edo. Tetracarpidium conophorum or Plukenetia conophora,
botanically is the African walnut belongs to the family Euphorbiaceae.
Walnuts are a very common ingredient of our daily life. We consume
walnuts in chocolates, in cakes, in cookies and more. Even though these
taste slightly bitter they are one of the best friends of a baker, who
we have slowly come to fall in love with too. The tree serves a
multitude of uses; it can be used as food (edible seed), medicine,
furniture and dye.
The walnut seed has a number of health benefits
ranging from weight management to prevention and slowing of various
cancers.
Researchers are convinced—more than ever before—about the nutritional
benefits of walnuts when consumed in whole form, including the skin.
We
now know that approximately 90% of the phenols in walnuts are found in
the skin, including key phenolic acids, tannins, and flavonoids. Some
health experts will encourage you to remove the walnut skin—that
whitish, sometimes waxy, sometimes flaky, outermost part of shelled
walnuts.
There can be slight bitterness to this skin, and that’s often
the reason that experts give for removing it. However, we encourage you
not to remove this phenol-rich portion.
Walnuts are high in protein, vitamins, omega 3 fatty acids, trace
minerals, lecithin and oils. Compared with other nuts, which typically
contain a high amount of monounsaturated fats, walnuts are unique
because the fats in them are primarily polyunsaturated fatty acids
(PUFAs) and are the only nut with a significant amount of
alpha-linolenic acid.
Moreover, walnuts have insignificant amounts of
sodium and are cholesterol free.
Walnuts are really great for the skin and body. Many makeup and skin
care brands include walnuts in their ingredients as they are rich in
nutrients that benefit our beauty routines.
They are also sought after
for hair care. Many shampoos contain walnut extracts and walnut oil as
they have proven to keep hair healthy and make them shiny.
Calories in Walnuts: An ounce (28g) of (chopped) walnuts contains 183 calories of which 153 calories come from the fats.
Vitamins and Minerals in Walnuts: Walnut contains a
large amount of vitamins B6 (0.2mg per ounce of walnut) providing 8
percent of the daily requirement. It also has plenty of folate and
thiamin and useful quantity of vitamin E in the form of tocopherol.
Walnut is a rich source of manganese, one serving contributing to almost
half of its required daily value. It is also rich in other minerals
such as magnesium, phosphorus and iron.
Omega 3 in Walnuts: Omega 3 and Omega 6 are two
essential fatty acids required by our body for cell growth, immune
function, blood clotting and disease prevention, but our body cannot
make them on their own. So these fatty acids have to be obtained from
our diet. Our body needs two critical Omega-3 fatty acids,
(eicosapentaenoic acid, called EPA and docosahexaenoic or DHA) and
walnut contains a precursor Omega-3, called alpha-linolenic acid (ALA),
which the body converts to EPA and DHA. An ounce (28g) of walnuts
provides 18g of total fat of which 13g are PUFA and 2.5g are ALA.
Cholesterol Content in Walnuts: Walnut helps prevent
heart disease and are the fruit recommended for lowering cholesterol.
It is an established fact that coronary heart disease (CHD) is
associated with high total cholesterol and high LDL cholesterol levels.
Studies carried out across United States, Australia, New Zealand, Spain,
and Israel indicated that consuming 2 to 3 servings of walnuts daily
decreases cholesterol levels sufficient to lower risk of CHD.
It is safe to say that Walnuts serve as;
Walnuts as Brain Food: Walnuts have potential health
benefits in the area of memory and cognitive function as well. Low
omega 3 intake has been linked to depression and decline in cognitive
function. And taking into consideration that walnut is a rich source of
ALA (omega 3), it no doubt promotes brain health. Studies however show
that only moderate amount of walnut (2 or 6 percent of a healthy diet)
can improve motor and behavioral skills in older adults and higher
amounts, say 9 percent, impaired reference memory.
Walnuts in Pregnancy – Although not much research
has gone into the safety and benefits of consuming walnut during
pregnancy, it is believed that walnut may stave off nausea during
pregnancy and boost brain development in the child. However, one study
showed that consuming tree nuts (including walnut) during pregnancy
could raise the odds of asthma as food allergy in the child by 50
percent. But Harvard School of Public Health nutritionists rather
suggest that consumption of peanuts and tree nuts during pregnancy might
even decrease the risk of allergic disease development in children.
Walnuts to Prevent Cancer – Walnuts contain multiple
ingredients that, individually, have been shown to slow cancer growth,
including omega-3 fatty acids, antioxidants, and phytosterols. Consuming
walnuts regularly could even reduce the risk for breast cancer in
humans indicated researchers at Department of Biochemistry and
Microbiology, Marshall University School of Medicine, Huntington, West
Virginia following a study on laboratory animals. According to them
beta-sitosterol (a phytosterol) in combination with gama-tocopherol
(vitamin E) benefited against cancer cell growth. Numerous studies have
also shown that regular consumption of walnut can prevent and even slow
the progress of prostate cancer.
Walnuts and Type 2 Diabetes – Diabetes and obesity
expert Dr. David Katz recommends walnut as a nutritious food that must
form an important component of a healthy diet. He completely agrees with
the Harvard study that found two or more servings of walnuts per week
to be associated with 15 to 21 percent lower risk of incident type 2
diabetes in white US women.
Walnuts for Weight Management – Contrary to what people
believe, walnuts are actually good for weight management since an ounce
of walnut contains 2.5g of omega 3 fats, 4g of protein and 2g of fiber
that help provide satiety. And any successful weight management plan
must include the satiety factor; so walnut is undoubtedly the right food
to consider if you are into weight management program. Despite being
‘dense in calories’, walnut can also help with weight loss as is evident
from the findings of a research published in the International Journal
of Obesity, where overweight people following a Mediterranean style diet
that included walnuts for 18 months could improve weight loss and keep
weight off for a longer period than those following a low-fat diet.
Walnuts for Men – Eating about 75g of walnut daily
could help improve sperm quality. Researchers from the UCLA found that
the men who ate walnuts experienced improvement in sperm vitality,
motility, and morphology, as compared to those who didn’t. ‘Walnuts
provide a particularly rich source of a-linolenic acid, a natural plant
source of omega-3, which we suspect may have been responsible for the
improvements we observed,’ said study researcher Catherine Carpenter.
However, they are not sure if the findings work for men who have
fertility problems.
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