Marasmus is a form of severe malnutrition characterized by energy deficiency. A child with marasmus looks emaciated. Body weight is reduced to less than 60% of the normal (expected) body weight for the age.Marasmus occurrence increases prior to age 1, whereas kwashiorkor occurrence increases after 18 months.arasmus is a form of severe malnutrition characterized by energy deficiency. A child with marasmus looks emaciated. Body weight is reduced to less than 60% of the normal (expected) body weight for the age.
Heath and Aging. In 2010, an estimated 524 million people were aged 65 or olderâ8 percent of the worldâs population. By 2050, this number is expected to nearly triple to about 1.5 billion, representing 16 percent of the worldâs population. Although more developed countries have the oldest population profiles, the vast majority of older peopleâand the most rapidly aging populationsâare in less developed countries.
Posted on May 6, 2014 by U.S. Census Bureau. Tweet. Written By: Victoria A. Velkoff, Jennifer M. Ortman and Sandra Col by. Between 2012 and 2050, the share of the worldâs population age 65 and over is projected to double from 8 percent in 2012 to 16.7 percent in 2050 (see figure).