Diabetes warning issued as experts say it's linked to invisible cause

A new study by Chinese researchers has identified a link between type two diabetes and two common air pollutants, which are produced by car emissions and tobacco smoke

Typically, sugar-laden snacks, processed meats and a sedentary lifestyle are cited as the usual suspects in triggering type two diabetes. However, experts have now signalled an unexpected risk factor - and it's something completely invisible.

Alarmingly, this culprit is pollution or, more specifically, 'styrene' and 'ethylbenzene', which are both derived from petroleum and used in manufacturing synthetic rubber and resins. However, ethylbenzene is not only prevalent in industrial uses but vehicle emissions, pesticides, and even tobacco smoke.

Styrene on the other hand can be inhaled from the 'indoor air' contaminated by vapours emanating from building materials, tobacco, vehicle exhausts, and photocopiers, states the Agency for Toxic Substances and Disease Registry (ATSDR).

Dr Bin Wang, a leading author of the Huazhong University study, said: "Our research provides critical insights into how environmental pollutants like styrene and ethylbenzene exacerbate the genetic risk of [type two diabetes]. Understanding the dual influence of genetic and environmental factors is essential for improving public health strategies aimed at protecting high-risk groups."

Within the study, experts examined 2,219 Chinese adults aged between 18 and 80 over a staggering six-year period. By analysing urinary data and undertaking pollution-exposure tests, they investigated the connection between the chronic condition and contact with each chemical.

Their startling outcome presented 'initial evidence' that styrene and ethylbenzene exposure is 'significantly related' to the increased risk of type two diabetes. This relationship was 'aggravated' by genetic predisposition too.

Authors summarised: "These findings provide scientific evidence for formulating preventive strategies targeting [type two diabetes] and establishing regulations related to environmental pollution by [styrene and ethylbenzene]."

Diabetes UK estimates that 4.4million people in the UK have type two diabetes, while an additional 1.2million may be living with it undiagnosed. The NHS urges anyone who thinks they have diabetes to see a GP as the earlier treatment is started, the better.

Here are the most common symptoms of diabetes:

• Urinating more than usual
• Dehydration
• Overtiredness
• Unexplained weight loss
• Itching in the genital area or continued recurrence of thrush
• Cuts and wounds taking a long time to heal
• Blurry or unclear vision