Nature loves efficiency, which is very odd for something supposedly working at random. When you drop a ball, it falls straight down without taking any unexpected detours. When two molecules with the potential for bonding meet, they always bond- there is no room for indecision. This expenditure of least energy, also called the law of least effort, covers human beings, too. Certainly our bodies cannot escape the efficiency of the chemical processes goings on in each cell, so it is probable that our whole being is wrapped up in the same principle. This argument also applies to personal growth- the idea that everyone is doing the best he or she can from his or her own level of consciousness

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Reviewing Susan Jacoby's book The Age of American Unreason Kaminer (2008) sees Chopra's popular reception in America as being symptomatic of many Americans' historical inability (as Jacoby puts it) "to distinguish between real scientists and those who peddled theories in the guise of science". He currently serves as an Adjunct Professor of Executive Programs at the Kellogg School of Management at Northwestern University. The documentary is directed by actress Namrata Singh Gujral and also features cancer survivors Olivia Newton-John Diahann Carroll Melissa Etheridge Mumtaz and Jaclyn Smith.

His books have been translated into 35 languages and sold more than 20 million copies worldwide. Chopra has taught at the medical schools of Tufts University Boston University and Harvard University. His critics accuse him of creating a false sense of hope in sick individuals which may keep them away from effective medical care.