THE SHORT VERSION
- Ask what was studied, in whom and compared with what.
- Distinguish a research finding from a promise about your own outcome.
Look for a question and a comparison
Clinical trials compare treatments or approaches. Some randomly allocate participants to groups to help make the comparison fair. Ask what the treatment was compared with, how long people were followed and which outcomes were measured.
A personal account can describe someone's experience, but cannot by itself show what caused the result. A headline about one study may omit important details about who took part.
Check the size and meaning of the result
Ask how many people benefited, how large the change was and what unwanted effects occurred. A result about a laboratory measurement does not automatically establish a benefit you would notice in daily life.
Trial averages are not individual forecasts. Research in one group, product formulation or treatment period may not answer a different question. Be cautious when a claim supplies a percentage without its population, comparison or timeframe.
Use evidence with your circumstances
Read official guidance alongside the original evidence where practical. NICE recommendations bring evidence into decisions about care, while recognising that plans need to fit the person receiving them.
Ask your clinician how a finding relates to your health, preferences and other treatment. Check when information was updated and whether it addresses limitations. You should be able to find the source without relying on an unnamed ‘medical team’ or an unexplained approval badge.
Sources you can check
- NHS: understanding clinical trials
- NICE: individualised dietary and activity support
- NICE: medicines, monitoring and support after treatment
Editorial presentation updated 24 October 2026. This is general information, not individual medical advice or a claim of independent clinical review. Read the linked source and the leaflet supplied with your medicine for the full context. Suggest a correction.