Research has shown for the first time the scale of the impact of a condition associated with benign tumors that can lead to type 2 diabetes and high blood pressure. Up to 10 percent of adults have a benign tumor, or lump, known as an 'adrenal incidentaloma' in their adrenals—glands situated on top of the kidneys which produce a variety of hormones. The lumps can be associated with the overproduction of hormones including the stress steroid hormone cortisol, which can lead to type 2 diabetes and high blood pressure. Previous small studies suggested that one in three adrenal incidentalomas produce...