By Lisa Rapaport (Reuters Health) – Although smoking increases the risk of diabetes and quitting has numerous health benefits, diabetics who quit may have temporary difficulty controlling their symptoms, a British study finds. Researchers reviewed medical records for 10,692 adult smokers with diabetes in the UK and found that smoking cessation led to an uptick in blood sugar levels that lasted three years and was not caused by weight gain. Worldwide, nearly one in 10 adults had diabetes in 2014, and the disease will be the seventh leading cause of death by 2030, according to the World Health Organization. Most of these people have type 2 diabetes, which is associated with obesity and aging and happens when the body can’t properly use or make enough of the hormone insulin to convert blood sugar into energy.