Gestational protein restriction (i.e., limiting the intake of a pregnant female) has a powerful influence on a number of aging-related biomarkers, including DNA damage, antioxidant defenses and telomere length. These findings have important implications for our understanding of the relationship between development and calorie restriction (CR), and major ramifications for anyone considering both CR and pregnancy. Caveat: the study was performed in rats, but then again, most CR studies rely on rodent models, so this is at least as germane as other studies describing the other side of the CR coin.
Ouroboros 
In fact, CRAN (caloric restriction and adequate nutrition) is the only proven method to date, to retard aging (acc. to Harrison’s Principles of Internal Medicine).