Controversial topics related to a low-carb diet, and our take on them, include saturated fats, cholesterol, whole grains, red meat and whether the brain needs carbohydrates. An excessive focus on counting calories has certainly not done much to reverse our current obesity epidemic. Fortunately there may be a better way. How to Stay Motivated – Srini Pillay, MD, psychiatrist and brain imaging specialist, discusses the missing rewards that motivate healthy lifestyle change. Cutting back on the time spent sitting in front of a screen can be a key part of adopting a more active lifestyle and preventing weight gain.