Exam 2: Evaluating Nutrition Information

A person claims his newly invented device treats cancer without surgery,medication,or other forms of conventional medical therapy.However,people who have used the device report that it was not helpful,and it may have harmed them.According to this information,the inventor's claims and his device are

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

_____ can be classified as a dietary supplement.

Scientists enroll 500 healthy adults in a study and collect dietary and other lifestyle information about the group.After 6 years,the scientists determine that study participants who ate at least 5 servings of fruits and vegetables daily were less likely to develop high blood pressure than participants who ate fewer than 5 servings of these foods daily.This study is an example of a(n)____ study.

Phil is a participant in a study designed to examine the effects of taking a dietary supplement on muscle tissue development.Phil suspects he is in the experimental group,because he is certain his muscles are bigger and stronger as a result of taking the product supplied by the researchers.When the study is completed,Phil learns that he did not receive the dietary supplement.Phil thinks the researchers made a mistake-he is certain his muscle mass increased while he took the supplement.According to this information,Phil's belief that his physical condition improved while he participated in the study is an example of

Zack takes 500 mg of vitamin C daily.He advises his friends to take vitamin C supplements because,he claims,the vitamin protects him from cold viruses.His claim about the usefulness of the vitamin is an

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,

The professional football star Andro "The Man" McGraw claims the dietary supplement AminoProFix helped him build muscle mass quickly and safely.His endorsement of the product is an example of

According to the observations of a nutrition scientist,laboratory mice are healthier when their diet contains physiological levels of vitamin D than when their diet lacks the micronutrient.The scientist hypothesizes that mice will be less likely to develop cancer when they consume a diet that supplies megadoses of vitamin D.Based on this information,the scientist is ready to

Which of the following kinds of studies would be the best to use when investigating whether cigarette smoking influences weight gain?

Which of the following statements is false?

Generally,epidemiological studies

After reviewing the results of a patient's medical tests,a physician tells the patient that her mild back pain is not caused by a serious problem,and she can try acupuncture and massage therapy to relieve the discomfort.Based on this information,the physician's advice indicates that he

Actress Lotta Talent appears in commercials endorsing the herbal supplement hoodia for weight loss.Her endorsement is an example of a(n)

A group of scientists would like to determine lifestyle factors that are associated with the development of asthma among American children.Based on this information,the researchers should design a (an)_____ study.

Which of the following statements is true?

Researchers at a major American university plan a 10-year scientific study to investigate lifestyle factors that contribute to heart disease.Which of the following activities is likely to be a component of their research efforts?

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

Dylan takes garlic pills to lower his blood cholesterol level,and he recommends the pills to his friends,because he thinks the supplement is helpful.Dylan's nutrition-related advice to his friends is an example of a(an)

A group of scientists conducts a scientific study to investigate dietary factors that influence the development of obesity.Which of the following activities is not likely to be a component of their research efforts?