We will not report on push polls,tiny survey samples or work run and promoted by the commercial interest which stands to gain from the findings.

We will treat research based on animal studies with caution,preferring to focus on human trials,and making clear that the results may not translate to human trials.

We will examine how benefits and harms are discussed (in relative or absolute terms).

We will seek independent comment from others with expertise in the field,and include valid,informed criticisms of the research or treatment.

We will avoid language such as ‘‘safe’’,‘‘guaranteed’’ or ‘‘miraculous’’,knowing that nothing can be entirely safe,no results are guaranteed and medicine is not a miracle.