The crossword solution for the term 'Dietary No-No, For Some' is 'SALT'. SALT is a mineral composed of sodium and chloride, and it is an essential nutrient for human health. However, too much SALT can be detrimental to one's health, leading to high blood pressure, stroke, and other cardiovascular diseases. Therefore, for some people, SALT is considered a dietary no-no, as it should be consumed in moderation.