30m diabetics can't access the insulin they need 

The number of people suffering from diabetes is surging, even as tens of millions cannot get the insulin they need, the World Health Organization said Friday. 

The UN health agency stressed the need to cut prices and dramatically increase access to life-saving medicine.

More than 420m people are currently estimated to be living with diabetes globally, marking nearly a quadrupling in the past four decades.

And that number is expected to surge past half a billion by the end of this decade, WHO said Friday.

But despite an ample supply, high prices make it difficult for many diabetics to access the insulin they need to manage their condition.

"There are significant gaps in access to conditioning globally, particularly in lower-income countries," Kiu Siang Tay, of WHO's Access to Medicines and Health Products division, told reporters.

In a fresh report, WHO decried a betrayal of the solidarity shown by the Canadian researchers who discovered insulin 100 years ago.