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.
World population is expected to reach 8 billion people in 2023 according to the United Nations (in 2026 according to the U.S. Census Bureau). 7.6 Billion (2018) The current world population is 7.6 billion as of February 2018 according to the most recent United Nations estimates elaborated by Worldometers. The term World Population refers to the human population (the total number of humans currently living) of the world. 7 Billion (2011) According to the United Nations, world population reached 7 Billion on October 31, 2011. The US Census Bureau made a lower estimate, for which the 7 billion mark was only reached on March 12, 2012. 6 Billion (1999)