Aresearch study measures alcohol use and income level for a group of 40-year-old men to determine whether there is a relationship between the two variables. this study is an example of the strategy.

Awoman comes to your genetic counseling center because she knows that huntington disease occurs in members of her family. her paternal grandfather was afflicted, but so far her father shows no symptoms. her two great-great grandmothers on her father's side were healthy well into their 90s, and one of her great-great grandfathers died of unknown causes at 45. testing for huntington disease is extremely expensive, but she is concerned that she may fall victim to this disease and wants to plan her life accordingly. after examining her pedigree you advise her to

Is tea good for you? if so what type of tea is good for you? and how much should i drink before it is a threat to my health?

Grain products are a good source of .