World Diabetes Day: The silent killer endures

On World Diabetes Day, a new report by International Diabetes Federation (IDF) bears bad news to the Arab world, already boasting the highest prevalence of diabetes worldwide and reeling from its different side effects. According to the report, 35.4 million adults aged 20-79 of the Middle East and North Africa region are living with diabetes – over 40.6% of these are undiagnosed.

In 2015, over 340,000 people died due to diabetes, and projections for 2040 expects the number of people with diabetes to almost double, rising to 72.1 million.

Moreover, the silent killer is depleting resources in the region, with overall health expenditure eating up 15% of the region’s healthcare budget and it’s not enough. Although expenditure is also expected to double by 2040, the IDF says it will “likely not be enough to adequately treat all people with the disease.”

The wide infrastructure development, rapid urbanization, increased life expectancy and reduced infant morality also translated into lifestyle changes that included soaring rates of diabetes across most countries in the region, especially the Gulf states.

This time last year Nature Middle East ran a detailed infograph tracing the effects of the soaring epidemic. And nothing has changed much since then, except for the certainty that diabetes is still killing more than 10% of all adults in the region, and nearly half of these under 60, the cost to society and development due to the disease and other metabolic syndromes is high and rapidly growing.

The disease is worse in some countries than others. For instance, a report by our writer Louise Sarant earlier this year cited a study by King Fahad Medical City in Riyadh, predicting that over the next ten years, one in four Saudis will be at risk of having a fatal heart attack.

Of the 4,900 urban-dwelling Saudis monitored by the study, 26% were at high risk of having a heart attack in the next decade. Those in the cohort did not have a history of cardiovascular diseases (CVD), and were between the ages of 20 and 40.

Of those studied, the research found out that 25% had diabetes, 34% hypertension, 25% were smokers, 27% were obese, 86% were not involved in any physical activity and 19% had dyslipidemia, an abnormal level of lipids in the blood.

Another report published a year earlier, also by Sarant, warns of a sharp hike in type 1 diabetes cases. More alarmingly, the incidence among infants of this type was reported to be growing with children developing the disease as early as six months, rather than the established peak ages of around seven and at puberty, when hormones antagonize the action of insulin.

Regional experts have told Nature Middle East that changes in policy, and better research into diabetes, is needed. But it seems that few are listening.

In short, the region has a ‘fat’ diabetes problem, and it’s not waning. And the Middle East and North Africa, like the rest of the world, are no closer to a cure.

 

A vast ancient river is buried beneath the Sahara

Beneath the shifting sands of the Sahara lies a dried-up ancient river network, approximately 520 km in length, bearing witness to a time when the arid land was wetter, greener and flowing with life.

The river network, whose sediments and worn path lies beneath Mauritania, probably slithered for hundreds of kilometers across the Sahara roughly 5,000 to 11,700 years ago. The ancient river was reportedly sourced from the Hoggar Highlands and the southern Atlas mountains in Algeria. If it had managed to endure to this era, its river valley would’ve ranked twelfth among the top 50 largest drainage basins worldwide.

The new study, published this week in Nature Communications by Charlotte Skonieczny of University of Lille, France and her team, may change our understanding of the African continent under past and future climates.

No major rivers exist in the Western Sahara at present, but the recent findings provide the first direct evidence of the presence of a vast waterway and possibly lush vegetation in the currently inhospitable stretch of land.

There were already indications to point to the past existence of a major West African river system: the discovery of fine-grained, river-borne material in the deep ocean, and an extensive submarine channel – the Cap Timiris Canyon – carved into the continental shelf off the Western Sahara coast. The canyon was said to be possibly connected to this river.

Now the use of orbital radar satellite imagery, using an advanced Japanese remote-sensing instrument that has the ability to probe beneath sand dunes, have successfully geologically mapped what lies beneath, revealing a river that, according to the study, aligns perfectly with the submarine canyon previously observed.

The branch of the network identified in this study represents a fifth of the total length of the fossil river.