Exam 2: Evaluating Nutrition Information

An online magazine article about weight-loss diets includes false information about the process of digestion that uses scientific-sounding terms to make it seem factual.The faulty information is an example of

A group of registered dietitian nutritionists is planning to conduct a scientific study to investigate the effects of eating honey on behavior in school-aged children.To start,the researchers will

A group of scientists suspects that certain dietary practices are partially responsible for different rates of hypertension among adults of different ethnic/racial groups.To test their hypothesis,the researchers examine data concerning the different population groups' hypertension rates and their past dietary practices.This research is a ________ study.

Which of the following observations is an example of an inverse correlation?

An online advertisement for a weight-loss product includes before and after photos of a woman who supposedly lost 50 pounds in 3 weeks while taking the product.The bottom of the ad includes the statement,"Results are not typical." This statement is an example of a(n)________.

A researcher wants to identify lifestyle factors that increase the risk of stomach cancer in men.His study design involves enrolling 250 adult men who have stomach cancer,and 250 men who are cancer-free,but have similar characteristics and backgrounds as the men who have stomach cancer.The researcher collects and analyzes information about each participant's lifestyle.Based on this information,what kind of study is the researcher conducting?

Having a control group enables researchers to

A medical researcher reads an article in Today's Health-Conscious Woman magazine about the benefits of using the phytochemical capsaicin to treat knee pain.She asks 10 people with arthritic knees to rub a cream that contains the phytochemical on their knee joints for 2 weeks.At the end of the 2 weeks,the researcher asks the subjects whether their knee pain improved,stayed about the same,or worsened during the treatment period.After collecting responses from the people,the researcher reports the results of her study during a popular TV show that is hosted by a doctor.Based on this information, which of the following statements is true?

Pellagra is an infectious disease.

Which of the following observations is an example of a positive correlation?

A physician who hosts a popular TV show makes several nutrition-related claims during one of the programs.Which of the doctor's claims is a "red flag" of unreliable information?

Which of the following statements is true? 

Which of the following observations is an example of a negative correlation?

Generally,epidemiological studies ________.

Which of the following statements is true?

A popular women's magazine has an article about the health benefits of consuming calcium-rich foods.If the article's author has the credentials,________,after his or her name,the article is likely to be a reliable source of nutrition information.

Which of the following observations is an example of an inverse correlation?

Researchers are conducting a study to determine the effects of zinc supplements on migraines in adults.The study involves providing pills that contain zinc to one group of human subjects,and pills that do not contain zinc or other active ingredients to another group of people.The pills that do not contain zinc are

The host of a radio program makes a "red flag" claim about a nutrition-related product,because the claim is generally an indication that the information about the product is unreliable.The radio program host said,

Emily has brittle fingernails that crack and split easily.Emily's mother advises her daughter to take gelatin pills 3 times/day,because she has heard the practice strengthens fingernails.The mother's nutrition-related advice about the benefit of taking gelatin pills is an example of a(n)