Given a paragraph, generate a claim that is supported by the given paragraph. 1) The claim must contain information from within the paragraph. 2) A sentence within the paragraph can be used as a claim. 3) The claim should not have contradictions within the paragraph. 4) The claim should be at most one sentence long.
Q: Since this story doesn't make claims about efficacy, costs don't seem applicable. We give this story a satisfactory score, but the story could have helped readers understand why measuring surrogate markers such as homocysteine levels can be different than tracking true outcomes such as heart attack or stroke. Here, the surrogate endpoint (homocysteine levels) "improved," but the real endpoint heart attack and stroke did not. There is no discussion of any harms associated with consumption of vitamin B supplements, although such harms would occur from vitamin B intake unlike that studied, so this gets a satisfactory grade. Two of the three studies referred to in the journal article are detailed; a brief reference is given for the third. In addition to the discussion of the studies, a quote was pulled from an editorial in the journal that published the studies. No other treatment options for lowering risk of heart attacks or strokes are mentioned. It's clear from the story that B vitamins have been in use for some time by many people for these purposes. It's clear from the story that B vitamins have been in use for some time by many people for these purposes. We can't be sure if the story relied solely or largely on a news release.
A:
Study: Heart attacks not cut by B vitamins