According to a new study, diabetes-related nerve damage, or diabetic neuropathy, can cause pain and numbness, most commonly in the hands and feet. Diabetic neuropathy is a painful condition that affects around 25% of the 37 million Americans who have diabetes. "Diabetic neuropathy often results in poor quality of life, depression, anxiety and impaired sleep, and the available medications can be ineffective for many people or have side effects that people can’t tolerate," said study author Erika Petersen, MD, of the University of Arkansas in Little Rock. "These results are exciting because there is an urgent need for more effective therapies."