Roberts S B
Energy Metabolism Laboratory, USDA Human Nutrition Research Center on Aging at Tufts University, 711 Washington St., Boston, MA 02111, USA.
J Nutr Health Aging. 2000;4(3):170-1.
Inadequate energy intake is common in older individuals and is probably the major cause of unexplained weight loss. This summary highlights recent studies on possible causes of negative energy balance in older individuals suggesting that aging is associated with a significant impairment in the regulation of food intake that inhibits appropriate short-term and long-term compensation for normal fluctuations in energy intake. The combination of a reduced ability to regulate energy intake, decreased dietary variety, and disadvantageous social factors such as functional limitations, social isolation and depression, increases the risk of negative energy balance leading to weight loss in older individuals.
能量摄入不足在老年人中很常见，可能是不明原因体重减轻的主要原因。本综述重点介绍了近期关于老年人能量负平衡可能原因的研究，表明衰老与食物摄入调节的显著受损有关，这种受损抑制了对能量摄入正常波动的适当短期和长期补偿。调节能量摄入能力下降、饮食种类减少以及功能受限、社会隔离和抑郁等不利社会因素相结合，增加了老年人能量负平衡导致体重减轻的风险。
