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Climate change can cause selenium deficiency in soil and humans
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Cases of a deadly heart ailment called Keshan disease, which has been linked to selenium, deficiency, were reported in northeast and southwest China in 1935. The condition was fatal in 40
per cent of the cases in 1940. When Se levels in the region were studied to investigate any link, it was found that Se concentration in maize and vegetables lower in endemic regions than
non-endemic regions. The blood and hair samples from endemic population also showed low Se levels. However, researchers think there could be other factors like viral infection at play.
Another study highlighted the role of Se in improving cardiac function after six months of treatment in a 15-month-old child from Saudi Arabia.