What is the InsideTracker optimal zone? What is the difference between optimal and normal?

The InsideTracker algorithm, B.R.A.I.N (Biomarker Research Analysis Integrative Network), determines optimal zones for each of your individual biomarkers. These optimal zones are personalized based on the latest peer-reviewed scientific research, as well as on your unique demographic and lifestyle information. For example, the generic normal range for a man's level of ferritin, a blood marker for iron, is between 30 and 400 units. However, InsideTracker recommends that a male athlete in his 20s should have a more specific optimal zone of ferritin between 40 and 150 units to achieve optimal performance. Please read our blog post for additional information on this topic.