Omega-3 oils could tackle damage caused by air pollution, Scientists at Harvard Medical School reveal.

Examples of omega-3 oils include:
<ul>
 	<li>Soybean oil</li>
 	<li>Canola oil</li>
 	<li>Cod liver oil</li>
 	<li>Flax-seed oil</li>
 	<li>Mustard oil</li>
 	<li>Walnut oil</li>
</ul>
Source: Guardian

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