Answer the following question: Information: - The United Nations Children's Fund (UNICEF) is a United Nations (UN) programme headquartered in New York City that provides humanitarian and developmental assistance to children and mothers in developing countries. It is one of the members of the United Nations Development Group and its executive committee. - Charles Tufts (July 16, 1781 December 24, 1876) was an American businessperson and philanthropist. - Tufts University is a private research university incorporated in the municipality of Medford, Massachusetts, United States. Tufts College was founded in 1852 by Christian Universalists who worked for years to open a non-sectarian institution of higher learning. Charles Tufts donated the land for the campus on Walnut Hill, the highest point in Medford, saying that he wanted to set a "light on the hill." The name was changed to Tufts University in 1954, although the corporate name remains "the Trustees of Tufts College." For more than a century, Tufts was a small New England liberal arts college. The French American nutritionist and former professor at the Harvard School of Public Health Jean Mayer became president of Tufts in the late 1970s and, through a series of rapid acquisitions, transformed the school into a larger research university. - Public health refers to "the science and art of preventing disease, prolonging life and promoting human health through organized efforts and informed choices of society, organizations, public and private, communities and individuals." It is concerned with threats to health based on population health analysis. The population in question can be as small as a handful of people, or as large as all the inhabitants of several continents (for instance, in the case of a pandemic). The dimensions of health can encompass "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity," as defined by the United Nations' World Health Organization. Public health incorporates the interdisciplinary approaches of epidemiology, biostatistics and health services. Environmental health, community health, behavioral health, health economics, public policy, insurance medicine, mental health and occupational safety and health are other important subfields. - The Mystic River is a river in Massachusetts, in the United States. Its name derives from the Wampanoag word "muhs-uhtuq", which translates to "big river." In an Algonquian language, "Missi-Tuk" means "a great river whose waters are driven by waves", alluding to the original tidal nature of the Mystic. It lies to the north of and flows approximately parallel to the lower portions of the Charles River. - The World Health Organization (WHO) is a specialized agency of the United Nations that is concerned with international public health. It was established on 7 April 1948, headquartered in Geneva, Switzerland. The WHO is a member of the United Nations Development Group. Its predecessor, the Health Organization, was an agency of the League of Nations. - The United Nations Development Group (UNDG) is a consortium of many United Nations agencies, created by the Secretary-General of the United Nations in 1997 to improve the effectiveness of UN development activities at the country level. - Jean Mayer ( February 19 , 1920 -- 1 January 1993 ) was a French - American scientist best known for his research on the physiological bases of hunger and the metabolism of essential nutrients , and for his role in shaping policy on world hunger at both the national and international levels . As a professor at the Harvard School of Public Health , Mayer directed a laboratory that did groundbreaking work on the hypothalamic regulation of obesity and various metabolic disorders . In 1968 - 69 , having worked as an adviser to the World Health Organization and UNICEF , he was appointed principal organizer and chair of the first White House Conference on Food , Nutrition , and Health . At Harvard University , he served as Master of Dudley House before leaving in 1976 to become the tenth President of Tufts University in Medford , Massachusetts , where he is given credit for having brought about an unprecedented rise in the university 's national reputation . He died unexpectedly on January 1 , 1993 . - The Ivy League is a collegiate athletic conference comprising sports teams from eight private institutions of higher education in the Northeastern United States. The conference name is also commonly used to refer to those eight schools as a group beyond the sports context. The eight institutions are Brown University, Columbia University, Cornell University, Dartmouth College, Harvard University, the University of Pennsylvania, Princeton University, and Yale University. The term "Ivy League" has connotations of academic excellence, selectivity in admissions, and social elitism. - Medford is a city 3.2 miles northwest of downtown Boston on the Mystic River in Middlesex County, Massachusetts, United States. In the 2010 U.S. Census, Medford's population was 56,173. It is home to Tufts University. - Harvard University is a private Ivy League research university in Cambridge, Massachusetts, established in 1636, whose history, influence, and wealth have made it one of the world's most prestigious universities. - The City of New York, often called New York City or simply New York, is the most populous city in the United States. With an estimated 2015 population of 8,550,405 distributed over a land area of just , New York City is also the most densely populated major city in the United States. Located at the southern tip of the state of New York, the city is the center of the New York metropolitan area, one of the most populous urban agglomerations in the world. A global power city, New York City exerts a significant impact upon commerce, finance, media, art, fashion, research, technology, education, and entertainment, its fast pace defining the term "New York minute". Home to the headquarters of the United Nations, New York is an important center for international diplomacy and has been described as the cultural and financial capital of the world. - A research university is a university that expects all its tenured and tenure-track faculty to continuously engage in research, as opposed to merely requiring it as a condition of an initial appointment or tenure. Such universities can be recognized by their strong focus on innovative research and the prestige of their brand names. On the one hand, research universities strive to recruit faculty who are the most brilliant minds in their disciplines in the world, and their students enjoy the opportunity to learn from such experts. On the other hand, new students are often disappointed to realize their undergraduate courses at research universities are overly academic and fail to provide vocational training with immediate "real world" applications; but many employers value degrees from research universities because they know that such coursework develops fundamental skills like critical thinking. - A president is the leader of a country or a division or part of a country, typically a republic, a democracy, or a dictatorship. The title "president" is sometimes used by extension for leaders of other groups, including corporate entities and social groups. - Massachusetts ; officially the Commonwealth of Massachusetts, is the most populous state in the New England region of the northeastern United States. It is bordered by the Atlantic Ocean to the east, the states of Connecticut and Rhode Island to the south, New Hampshire and Vermont to the north, and New York to the west. The state is named for the Massachusett tribe, which once inhabited the area. The capital of Massachusetts and the most populous city in New England is Boston. Over 80% of Massachusetts' population lives in the Greater Boston metropolitan area, a region influential upon American history, academia, and industry. Originally dependent on agriculture, fishing and trade, Massachusetts was transformed into a manufacturing center during the Industrial Revolution. During the 20th century, Massachusetts' economy shifted from manufacturing to services. Modern Massachusetts is a global leader in biotechnology, engineering, higher education, finance, and maritime trade. What entity does 'jean mayer' has the relation 'occupation' with?
Answer:
nutritionist