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Walter C. Willett (born June 20, 1945) [1] is an American physician and nutrition researcher. He is the Fredrick John Stare Professor of Epidemiology and Nutrition at the Harvard School of Public Health and was the chair of its department of nutrition from 1991 to 2017.
The citation link will point to the first Harvard reference in the References section that matches both the author(s) and publication date (see examples below). Both the in-text citations and the references at the bottom of the page have format rules. For a full description of their format with examples, see Harvard referencing.
The Population Reference Bureau (PRB) ranking list is based on the data of the 2024 World Population Data Sheet [6] published online. The PRB [ 7 ] is a private, nonprofit organization which informs people around the world about population, health and the environment for research or academic purposes.
[33] [37] Women who consume a small percentage of their diet from animal-sourced foods or who by choice consume a vegetarian or vegan diet are at higher risk than those consuming higher amounts of animal-sourced foods of becoming vitamin depleted during pregnancy, which can lead to anemia, and also an increased risk that their breastfed infants ...
The following list sorts countries and dependent territories by their net reproduction rate. The net reproduction rate (R 0) is the number of surviving daughters per woman and an important indicator of the population's reproductive rate. If R 0 is one, the population replaces itself and would stay without any migration and emigration at a ...
This is a list of U.S. states, federal district, and territories by total fertility rate. Total Fertility Rate by U.S. state in 2021 according to the Center for Disease Control & Prevention Fertility rate by State 2008 - 2020
Renée Zellweger took a step back from acting for a six-year stretch in the 2010s, and she's opening up about the reason for her hiatus.. The Oscar-winning "Bridget Jones's Diary" actress, 55 ...
A 2022 meta-analysis reported that this decline extends to non-Western countries, namely those in Asia, Africa, Central America, and South America. [5] This meta-analysis also suggests that the decline in sperm counts may be accelerating. [5] This decline in male fertility is the subject of research and debate.