science

The American Journal of Clinical Nutrition

The American Journal of Clinical Nutrition is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand The American Journal of Clinical Nutrition rather than just read about it. In short: The American Journal of Clinical Nutrition (AJCN) is a monthly peer-reviewed biomedical journal in the fields of dietetics and clinical nutrition. The journal was established in 1952 as the Journal of Clinical Nutrition, edited by S.O.

Key takeaways

The American Journal of Clinical Nutrition belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect The American Journal of Clinical Nutrition to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of The American Journal of Clinical Nutrition from memory before moving on to harder problems.

Reference excerpt

The American Journal of Clinical Nutrition (AJCN) is a monthly peer-reviewed biomedical journal in the fields of dietetics and clinical nutrition. The journal was established in 1952 as the Journal of Clinical Nutrition, edited by S.O. Waife and published by the Nutrition Press. It was continued in series under the present title from 1954 and was published by the American Society for Clinical Nutrition (ASCN). It is now published by the American Society for Nutrition. The journal's editor-in-chief is Christopher P Duggan of Harvard Medical School. A poll conducted in 2009 by the Biomedical and Life Sciences Division of the Special Libraries Association identified the journal as among the "100 most influential journals ... over the last 100 years" in the fields of biology and medicine. According to the Journal Citation Reports, the journal has a 2021 impact factor of 7.045.

Criticism and controversy

Conflicts of interest Marion Nestle voiced concerns in November 2013 about conflict of interest by the AJCN board. Nestle stated that of the twelve-member editorial board "the majority — 7 of the 12 — list major corporate affiliations. The list of food companies for which they consult or advise ... includes Coca-Cola, PepsiCo, The Sugar Association, The National Restaurant Association, ConAgra, McDonald's, Kellogg, Mars, and many others." Most of these, and various other major companies and corporations in the food industry, or their surrogates, are among those listed in the "Conflict of Interest Statements for The American Journal of Clinical Nutrition Editors," published by their affiliate, Oxford University Press. In a 2015 report, Michele Simon also voiced concerns regarding corporate involvement with the American Society for Nutrition's journals. The journal publicly lists the conflicts of interest of its editorial board on its website. In 2007, they published an article outlining their conflict of interest policy. Nestle subsequently found widespread examples of apparent conflicts of interest resulting in apparently distorted studies published in various major journals of nutrition, including in the AJCN.

Criticism of content In a February 2022 letter published in AJCN, seven co-authors of the Endocrine Society's 2017 scientific statement on the causes of obesity criticized a December 2021 AJCN article that they said had "several... statements" that were "misleading and factually incorrect," "mischaracterizing... the main thrust" of the Society's position that "views obesity as a complex disorder" -- instead falsely characterizing the Society's statement as simply asserting that obesity only depends upon "more calories [being] consumed than expended." The letter's authors pointed to the AJCN's article as triggering false reporting in the media that "Overeating is not... the primary cause of obesity." The AJCN article was so quoted in media in the scientific and medical communities, business media, and popular media, in the United States and abroad.

References

Worked examples

Example 1 — a first encounter with The American Journal of Clinical Nutrition

Start with the simplest possible case. Write down what The American Journal of Clinical Nutrition claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to The American Journal of Clinical Nutrition before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about The American Journal of Clinical Nutrition ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of The American Journal of Clinical Nutrition

In research: The American Journal of Clinical Nutrition appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses The American Journal of Clinical Nutrition in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: The American Journal of Clinical Nutrition is common in secondary-school and first-year university syllabi. It links to neighbouring topics Academic journals established in 1952, English-language journals, Food science journals, so understanding it makes those chapters shorter.
In everyday life: Look for The American Journal of Clinical Nutrition outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study The American Journal of Clinical Nutrition in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what The American Journal of Clinical Nutrition means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain The American Journal of Clinical Nutrition out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is The American Journal of Clinical Nutrition in simple terms?

Why does The American Journal of Clinical Nutrition matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study The American Journal of Clinical Nutrition?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on The American Journal of Clinical Nutrition.