By Kathryn Doyle (Reuters Health) – Adopting a healthier diet may lower type 2 diabetes risk over time, while a worsening diet is often accompanied by increased risk, according to a new U.S. study. “Although recent public health recommendations have increasingly focused on advocating overall diet quality improvement, evidence has been limited on whether changing overall diet in adulthood has a long-term preventative impact on diabetes prevention in general population,” said lead author Sylvia H. Ley of the Harvard T.H. Chan School of Public Health and Brigham and Women’s Hospital and Harvard Medical School in Boston. “We provide evidence that improving diet quality in adulthood is associated with type 2 diabetes prevention, while worsening diet quality is associated increased risk for diabetes,” she said by email.