The document discusses common nutritional deficiencies in men in the UK. It reports that 10% of UK men are deficient in zinc, which is important for the immune system. 20% are deficient in selenium, an antioxidant, and 7% in vitamin A, which promotes good vision. 42% of men in England are overweight, and those with unhealthy diets may be more prone to deficiencies. 9% lack magnesium for muscle function and 25% were deficient in vitamin C as of 2003-2005. The sources listed provide further information on dietary standards and deficiencies in the UK.