The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Shaon Lab:
Nutrition is all about the study of food and how our bodies use food as fuel for growth and daily activities. The macro-nutrients, or "big" nutrients include proteins, carbohydrates, and fats. The micro-nutrients, or "little" nutrients are the vitamins and minerals that we need to be healthy.Nutrition Fact help you learn about these nutrients, and help you analyze your own diet and food choices. All information is intended for your general knowledge only and is not a substitute for medical advice or treatment for specific medical conditions.