A cross-sectional study has found an association between depression and lack of vitamin D in older people. Data were provided by the 2005 Health Survey for England, which focussed on the health of older people. This identified a nationally representative sample of community residents aged ≥ 65, of whom 2,070 agreed to participate in this study. 'Recognition and treatment of vitamin D deficiency is important on account of its health consequences: vitamin D deficiency ('