Really not relevant unless you are dieting to a degree that will destroy muscle as well. The study cites extreme fat loss scenarios like anorexia or massive weight loss from an obese state as a significant context for adipocyte apoptosis.
Due to downregulation if IGF-1? The merit of destroying adipocytes is to reduce the hormonal response from empty adipocytes that generate cravings and the like. For many people including myself, low-carbing will have the same effect. If someone was obese and is now in-shape, then this study postulates that many adipocytes will have been destroyed; if someone has never been fat, then they don't have many adipocytes to begin with. Either way, the user already has a [lower] amount of fat cells, so no need to go through the torture that is the Atkins Diet .