Fresh green beans
are very low in calories (31 kcal per 100 g of raw beans) and contain no
saturated fat; but are very good source of vitamins, minerals, and plant
derived micronutrients.
They are very
rich source of dietary fibre (9% per100g RDA) which acts as bulk laxative that
helps to protect the mucous membrane of the colon by decreasing its exposure
time to toxic substances as well as by binding to cancer causing chemicals in
the colon. Dietary fibre has also been shown to reduce blood cholesterol levels
by decreasing re-absorption of cholesterol binding bile acids in the colon.
Green beans
contain excellent levels of vitamin A, and many health promoting flavonoid poly
phenolic antioxidants such as lutein, zeaxanthin and ß-carotene in good
amounts. These compounds help act as protective scavengers against
oxygen-derived free radicals and reactive oxygen species (ROS) that play a role
in aging and various disease process.
Zea-xanthin, an
important dietary carotenoid in the beans, selectively absorbed into the
retinal macula lutea in the eyes where it thought to provide antioxidant and
protective UV light filtering functions. It is, therefore, green beans offer
some protection in preventing age related macular disease (ARMD) in the
elderly.
Fresh snap beans
are good source of folates. 100 g fresh beans provide 37 µg or 9% of folates.
Folate along with vitamin B-12 is one of the essential components of DNA
synthesis and cell division. Good folate diet when given during preconception
periods and during pregnancy helps prevent from neural-tube defects in the
offspring.
They also contain
good amounts of vitamin-B6 (pyridoxine), thiamin (vitamin B-1), and vitamin-C.
Consumption of foods rich in vitamin C helps body develop resistance against
infectious agents and scavenge harmful oxygen free radicals.
In addition,
beans contain healthy amounts of minerals like iron, calcium, magnesium,
manganese, and potassium, which are very essential for body metabolism.
Manganese is a co-factor for the anti-oxidant enzyme superoxide dismutase,
which is a very powerful free radical scavenger. Potassium is an important
component of cell and body fluids that helps controlling heart rate and blood
pressure.
Cardiovascular
Disease: Green beans can help reduce the risk of heart
disease due to their high levels of flavonoids. Flavonoids are polyphenolic
antioxidants that are commonly found in fruits and vegetables. They have high
levels of flavonoids and these antioxidants have certain anti-inflammatory
properties. Test subjects with high flavonoid levels experienced
anti-thrombotic results, preventing blood clots in the arteries and veins.
Cardiovascular disease, heart attacks, and strokes are commonly caused by
thrombotic activity, which means that a healthy volume of green beans and
flavonoids in a diet can help prevent some of these conditions.
Colon Cancer: Recent studies have shown green bean consumption to be
beneficial for preventing pre-cancerous polyps that commonly lead to colon
cancer. Many studies have tried to link dry bean intake to cancer prevention,
with limited results. However, new evidence suggests that increasing dietary
green bean intake can reduce the risk of cancerous adenoma recurrence and
colorectal cancer. More studies are ongoing, but that linkage is very
important.
Secondly, the high fibre content of green
beans can also positively impact your digestive system. Certain types of fibre
can ease the digestive process and promote healthy bowel movements, which
decreases the stress on the intestinal tract. Certain studies have shown a
positive correlation between increased fibre intake and a reduction in colon
cancer, but again, more research is still being performed.
Diabetes: These power-packed legumes have been shown to help manage and
regulate diabetes symptoms in many patients. Certain studies have shown a
definitive hypoglycaemic influence on patients with diabetes. Diabetes is a
condition that requires constant maintenance of blood sugar levels at a normal
level so the body can perform necessary tasks. Natural regulators of diabetes
are rare, and the connection of beans and similar plants to the control or
early prevention of diabetes is great news for many people.
Immune System: The presence of various immune system-boosting antioxidants in
green beans is well known, but as more research on their benefits is done, it
is becoming clear that there are far more antioxidant properties than we
previously thought. Antioxidants are beneficial compounds in our body that seek
out dangerous free radicals and eliminate them from our system before they can
cause illness or tissue damage.
They are a good source of flavonoids and
carotenoids, but the variety of those pigments was previously unknown.
Flavonoids contain basic antioxidants like quercetin and kamferol, but also
more useful and beneficial ones like catechins and epicatechins. Catechins have
been shown to reduce the severity of strokes. Carotenoids found in green beans contain
antioxidants like beta carotene and lutein. Beta carotene has been linked to a
number of benefits within the body.
Eye Health: Certain specific carotenoids that are found in green beans can
also prevent macular degeneration, which is a decrease in vision and eye
function. Lutein and Zeaxanthin are focused at the macula on the eye, and play
a key role in preventing any stress to the inner workings of the eye. Ensuring
that these carotenoid levels stay strong to prevent vision deterioration is one
of the many benefits of including green beans in your balanced diet.
Bone Health: There are a number of nutrients, such as calcium, found in green
beans that are integral in preventing bone deterioration and osteoporosis. They
contain vitamin K, vitamin A, and silicon. Deficiencies in many of these
compounds have been connected to increased bone loss, strength, and durability.
Silicon is not the most common mineral to hear about, and significant amounts
are relatively rare in most foods. However, green beans are a terrific source
for silicon, which is a key element in bone regeneration and overall bone
health.
Gastrointestinal Issues – Green beans are
packed with fibre, which is a hugely beneficial compound in our bodies. By
keeping enough fibre in our diets, we are able to ease certain digestive issues
like constipation, haemorrhoids, ulcers, and acid reflux disease. These
conditions range from mild irritants to potentially life threatening, and the
amount of fibre we consume is a key element in their prevention. In a normal
serving of green beans, which is 110 grams, you can gain 15% of the daily
recommended amount of fibre. They are one of the best vegetables to keep your
stomach working properly.
Pre-Natal Health – Green beans are also a great source of folic acid, which plays
a key role in a number of internal processes, but none are more important than
protecting infants in the womb. Folic acid levels in a woman’s body are vital
to the normal and healthy development of the fetus in utero, especially in preventing
neural tube defects. Green beans provide an easy and delicious way to keep
folic acid levels high, and ensure a healthy and happy baby.
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