Humans have evolved during periods of relative food scarcity and occasional abundance. Until very recently food intake was limited by availability within the environment and this played the key role in limiting weight gain. Evolution has selected our behavior and physiological systems to â€œbankâ€� surplus energy during times of abundance. We have now adapted our environment to ensure that, for the vast majority of us, food is of a high quality (energy or protein rich) and readily available, to the point that the health consequences of over-consumption now exceed those of under-consumption. That we have not had time to evolve adaptations to this new abundance of food makes obesity at a population level a near inevitable outcome.
|Title of host publication||Obesity and Weight Management|
|Subtitle of host publication||Challenges, Practices and Health Implications|
|Publisher||Nova Science Publishers Inc|
|Number of pages||22|
|Publication status||Published - 30 Sep 2012|
|Name||Public Health in the 21st Century|
- behavior change