A study has identified why a diet rich in magnesium is important for our health, reducing the risk of DNA damage and chronic degenerative disorders. Scientists measured blood samples from 172 middle aged adults, finding a strong link between low magnesium levels and high amounts of a genotoxic amino acid called homocysteine. This toxic combination damages the body's genes, making people more susceptible to Alzheimer's and Parkinson's disease, gastrointestinal diseases, a range of cancers, and diabetes. Whole grains, dark green leafy vegetables, nuts, beans and dark chocolate are all magnesium-rich foods, which help the body produce energy, build teeth and...