argument 34本来不想考的，还是考考看好了

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arg34
Milk and dairy products are rich in vitamin D and calcium, substances essential for building and maintaining bones. Many people therefore believe that a diet rich in dairy products can help prevent osteoporosis, a disease in which the bones weaken significantly with age and that is linked to both environmental and genetic factors. But a long-term study of a large number of people has found that those who have consistently consumed dairy products throughout the years of the study have a higher rate of bone fractures than any other participants in the study. Since bone fractures are a symptom of osteoporosis, this study result shows that a diet rich in dairy products may actually increase, rather than decrease, the risk of osteoporosis.

Theauthor doesn't indicated the points with deeper approval.


First,the reasearch method is not statistical significant. The auther doesn'tindicated the size and the age of the people participated in the research.Therefore, the people found with higher rate of fracture could be relatetivelyelder than those is not.


Secondly,the fratures occured in the particated population could not be caused byostensis, rather it could be other reason. for example, could be injure andanohter symtom of another desease. more the author doesn't indicated therelationship of dairy product and otensis. for example, the author doen'tindicates the relationship of the nutrient of vit d and calcium of buildingbones and the ioccurence of fracture.


lastly,people with ostensis could be a result of genesis and envirnemnt factors. forexample those with higher rate of fractures may work at a more dangerenvirnment, or relatively with a lower income before the research, thus a poorhealth condition in long term. and since ostensis could be affected by genesisfactor, it will be difficult to measure the cause of ostensis with a notclearified gentical research on those people.


to sum, the author ignored to state out more proofs onthree aspects- a statistical research method, the causes of fracture and thefactors that can affect ostensis.



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