Due weight for health-related content

When multiple points of view exist about health-related content, editors should strictly enforce the neutral point of view. A Wikipedia article is "neutral" when it fairly and proportionately presents the significant views that have been published by reliable sources on a topic. It is not sufficient to have a string of individually verifiable statements; the entire article, taken as a whole, must present a fair summary of significant viewpoints and must also omit viewpoints that are not significant to the article's topic, even if those omitted viewpoints are verifiable in reliable sources. To comply with the NPOV policy, follow these rules:

• Do not juxtapose a quote or claim from a person or organization in a way that results in a minority view or extraordinary claim being presented along with commonly accepted mainstream scholarship as if these views were all of equal validity. Doing so would violate WP:DUE and WP:GEVAL.
  • Y Smoke causes lung cancer.^[1]
  • N Smoke causes lung cancer,^[1] but Bob said that it doesn't.^[2]
• Do not use the primary medical literature (e.g., individual clinical trials) or WP:PRIMARYNEWS sources to debunk, contradict, or counter the views supported by reliable secondary sources (e.g., review articles, medical school textbooks, practice guidelines). Doing so would violate WP:MEDPRI.
  • Y Smoke causes lung cancer.^[1]
  • N Smoke causes lung cancer,^[1] but one clinical trial found that it doesn't.^[2]
• Do not give undue weight to minor aspects, because it is disproportionate to their overall significance to the article topic. Doing so would violate WP:BALASP.
  • Y Smoke causes lung cancer.^[1]
  • N Smoke causes lung cancer,^[1] but if the smoke comes from the deadly Manchineel tree, you might die from its poison before lung cancer can develop.^[2]