What are the main findings of the study mentioned in the news article?
How do these findings compare with broader guidance?
What are some examples of cases where supplements may be helpful?
What reasons does the article give for why multivitamin research is difficult to interpret?
Based on the article, does taking a daily multivitamin clearly help most healthy adults live longer?
Can you explain what the ‘healthy user effect’ and ‘sick user effect’ mean in simple terms?
What does a hazard ratio of about 1.04 mean in plain language?
Based only on the article, what is a reasonable takeaway for a generally healthy adult deciding whether to take a daily multivitamin?