Exam 2: Evaluating Nutrition Information

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 are common signs or symptoms of pellagra?

Which of the following statements is false?

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 ________.

A person claims her 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 her device are

A scientist adds 5 mcg of the mineral cadmium to the daily diet of 100 4-week-old laboratory mice.After 12 weeks,the researcher weighs and takes blood samples from each mouse.According to her findings,the mice lost weight during the 12-week period,and they have abnormal levels of certain hormones in their blood.Based on this information and your knowledge of scientific research,what would you tell the researcher about her findings?   

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

Scientists in a Central American country are studying factors that may be associated with delayed physical growth among a group of low-income children.The children live in a region of the nation that has high levels of lead in drinking water.This study is an example of a(an)________ study.

Which of the following kinds of studies would be the best to use when designing a scientific investigation to determine whether there is an association between consuming diets low in calcium during adolescence and developing osteoporosis (bone disease)in older adulthood?

Which of the following kinds of studies would be the best to use to identify lifestyle factors that may be related to the development of liver cancer in an adult population?

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 ________.

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)________.

Over a 2-year period,a team of scientists records the eating behaviors and physical activity patterns of a group of healthy 8-year-old children to determine whether these factors are associated with weight gain.This study is an example of a(n)________ study.

The ________ is responsible for ensuring the safety and effectiveness of medications.

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

Dr.Joseph Goldberger's scientific finding about the cause of pellagra was not welcomed by members of the medical community.

The government agency that enforces consumer protection laws by investigating false or misleading health-related claims is the

Which of the following statements is true?

Which of the following statements is false?

A nutrition researcher adds 30 mg of the mineral iron to the daily diet of 50 4-week-old laboratory mice.After 10 weeks,the scientist takes blood samples from each mouse.According to his findings,the mice developed abnormal levels of certain enzymes in their red blood cells.Based on this information and your knowledge of scientific research,what would you tell him?