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.
Using data from the CIA Factbook, we've created the graphics below to show you the median age of every country in the world. There are 1.2 billion people between the ages of 15 and 24 in the world today â and that means that many countries have populations younger than ever before.