3) Goldstein DJ: Beneficial health effects of modest weight loss. Int J Obes Relat Metab Disord 16 : 397-415, 1992.
4) Brazilai N and Bartke A: Biological approaches to mechanistically understand the healthy life span extension achieved by calorie restriction and modulation of hormones. J Gerontol 64 : 187-191, 2009.
5) Heilbronn LK and Ravussin E: Calorie restriction and aging: review of the literature and implications for studies in humans. Am J Clin Nutr 78 : 361-369, 2003.