A global diabetes epidemic is fueling record demand for insulin, but tens of millions would not get the injections they need unless there is a dramatic improvement in access and affordability, a new study reported yesterday.
Diabetes — which can lead to blindness, kidney failure, heart problems, neuropathic pain and amputations — affects 9 percent of all adults worldwide, up from 5 percent in 1980.
Most have type 2 diabetes — the kind linked to obesity and lack of exercise — and cases are spreading particularly rapidly in the developing world as people adopt more Western, urban lifestyles.
Researchers said the amount of insulin needed to effectively treat type 2 diabetes would rise by more than 20 percent over the next 12 years, but insulin would be beyond the reach of half of the 79 million type 2 diabetics predicted to need it in 2030.
The shortfall is most acute in Africa, where the team led by Sanjay Basu of Stanford University estimated supply would have to rise sevenfold to treat at-risk patients who had reached the stage of requiring insulin to control their blood sugar.
“These estimates suggest that current levels of insulin access are highly inadequate compared to projected need, particularly in Africa and Asia,” Basu said.
“Despite the UN’s commitment to treat non-communicable diseases and ensure universal access to drugs for diabetes, across much of the world insulin is scarce and unnecessarily difficult for patients to access,” Basu added.
Global insulin supply is dominated by three companies — Novo Nordisk, Sanofi and Eli Lilly — which have various programs to try to improve access to their products.
However, insulin remains costly and prices can be especially out of reach in poorer countries where tortuous supply chains and high mark-ups by intermediaries often make it unaffordable for many patients.
Overall, Basu and colleagues calculated that global insulin use was set to rise to 634 million 1,000-unit vials by 2030 from 526 million this year.
Their study, published in the Lancet Diabetes & Endocrinology journal and funded by the Helmsley Charitable Trust, was based on projections of diabetes prevalence from the International Diabetes Federation.
Hertzel Gerstein from Canada’s McMaster University wrote in an accompanying commentary that it was important to estimate and ensure insulin supplies, but added the forecasts should be treated cautiously as they were based on mathematical models.
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