Broccoli, cauliflower and cabbage have been found to have a protective effect against developing the autoimmune form of diabetes in children, says your article (Study links bananas, oats and yoghurt to greater diabetes risk in susceptible children, 8 September). Every parent would love to know how they were induced to eat them.
Harold Mozley
York
• Your editorial on public libraries (8 September) notes that the poorest areas often suffer disproportionately when it comes to funding. As a bookseller, we introduced a scheme this summer whereby a child can choose a book, along with a token, and then swap them once read. This has proved successful and we hope to develop this in the run-up to Christmas.
Rob and Kim Turnbull
Reiver Reads, Carlisle market hall