Tóm tắt nội dung: Health foods and dietary supplements are widely used throughout the world - it is estimated that more than seventy million people in Europe regularly buy these products, and it is a billion dollar business in the USA. Health foods include vitamins, minerals, cereals, nuts, herbal medicines, functional foods, and many others. A large number of people use these foods in the belief that they contribute to their general health, while, in most countries, little or no information is given on products explaining...