Ageing and illness are seen as inescapable facts as cells in our body malfunction and die over the passage of time. But this may not be inevitable.

Scientists in the ageing field have started to look at the role of mitochondria, the battery pack of every living cell. Shini Somara is at UCL to find out how energy levels in the cells of retinas can be boosted using specific wavelengths of light.

Recharging the Mitochondria to improve our eyesight could be just the start of this research - and early signs are that they could hold the key to a host of issues that we have only just begun to explore.

Disclaimer: DON'T TRY THIS AT HOME.

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