The analysis can reveal whether we have eaten red meat or fish and indicate whether we are eating fruit and vegetables. The test is sensitive enough to indicate some specific foods such as oranges, grapes and leafy green vegetables.
It can also tell how much fat, sugar, fiber and protein a person has eaten.
It's easy to see the value of such a test but also hard to overlook the possible repercussions depending on how and who is interpreting the data.
Life is a whim of several billion cells to be you for a while.