Onions are a bulb formed from the bases of their leaves. Inside their bulb their leaves are tightly pushed against each other and are protected by their tough outer leaves. Long, green, hollow leaves extend from their bulb and, later, if not harvested can produce a single flowering stalk.
Onions come in various shapes and colours, the most common being round to oval-shaped and slightly smaller than a tennis ball. Inside, onions have thickish, moist, leaf bases which form concentric rings from the centre outwards.
Also available are torpedo-shaped onions, globe-shaped onions with really flattened tops and bottoms, and small egg-shaped onions which are often sold as pickling onions. In addition, white, brown, red or yellow onions are also available.
Like the garlic, onions
belong to the allium family. Both of these
contain sulfur compounds which are responsible for its pungent odour and many of
the health benefiting effects. Onions are an excellent source of quercetin, a
Research has shown
that onions contain anti allergy, anti viral and anti histamine
properties. They also play an important role in our immune system. Research has shown that they inhibit the production
The white blood cells that
are responsible for triggering of large scale inflammatory responses. Whilst this activity is generally a positive consequence
of fighting off inflammation, inhibition of their activity can sometimes be critical
in managing getting chronic unwanted inflammation.
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