Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
While this book has a fluffy hippy title, it is actually based on well founded research. The ideas presented are logical and should be further investigated by all health practitioners that deal with gut health issues. This was a great read and I have gained a better understanding of how emotions can effect the gut and vice versa. It'd be great to follow this up with a book on application of these principles. Great read. Well done.