Googled Your Symptoms? How to Use Online Health Info Without Spiralling

TL;DR: Online symptom checkers named the correct diagnosis first only about a third of the time in a major BMJ study, and a 2025 study found most PCOS videos on TikTok contained some false information. Online research is most useful for understanding a diagnosis and preparing questions, and least useful for diagnosing yourself. Check who wrote it, what evidence it cites, and whether it is selling something, then take your notes and questions to a clinician.

It is late, you cannot sleep, and a pain that has been bothering you for a week will not leave your mind. So you type it into a search bar. Ten minutes later you have read about three rare cancers, watched a woman in a car explain that your hormones are "out of balance", and been offered a supplement that promises to fix everything. You feel worse than before you started.

Almost all of us do this. Searching is often the first step, especially when getting a clinic appointment in Lagos means a long wait, when a GP slot in London is weeks away, or when the topic feels too private to raise with family. Online information is not the enemy. The trouble is that it varies wildly in quality, and it rarely knows anything about you. This post is about using it well.

How accurate are online symptom checkers?

Less accurate than they feel. In a 2015 study in the BMJ, Semigran and colleagues tested 23 online symptom checkers using standardised patient cases. The tools listed the correct diagnosis first in 34 percent of cases, and somewhere in their top 20 in 58 percent. They gave appropriate triage advice, meaning whether to seek emergency care, see a doctor, or manage at home, in 57 percent of cases.

Tools have changed since then, but the lesson holds. A symptom checker can suggest possibilities. It cannot examine you, order a test, or weigh your history the way a clinician can, so treat its answer as one idea among several, not a verdict.

What about health advice on TikTok and Instagram?

Social media is where many young women now learn about their bodies, and some of it is excellent. Doctors, nurses, and midwives post clear, careful content, and hearing someone describe your symptoms can be the push you need to get checked.

But the quality is uneven. A 2025 study in the International Journal of Gynecology and Obstetrics, led by Riemma and colleagues, analysed 120 TikTok videos about PCOS. Only about 37 percent were accurate and evidence-based. Most of the rest contained some false information. Videos by healthcare professionals were far more accurate than videos by patients, yet the patient videos got more likes, comments, and saves.

That last finding matters. What spreads is not always what is right. A personal story can be powerful and still be wrong about the science, or right for that person and wrong for you. We have written before about health myths African women still face, and many of them travel faster online than they ever did by word of mouth.

How do I know if a health source is trustworthy?

Ask a few questions before you believe it. MedlinePlus, the US National Library of Medicine's consumer health site, suggests checking:

• Who runs it? Government health bodies, medical schools, hospitals, and established professional organisations are more reliable than anonymous pages.
• What is the purpose? Is it there to inform you, or to sell you something?
• Who funds it? Adverts should be clearly marked and kept separate from the health content.
• Where does the information come from? Good sources link to the studies or guidelines behind their claims.
• Is it current? Look for a date showing when the page was written or reviewed.
• Does it promise too much? Dramatic language and promises of cures are warning signs.

Useful starting points include the NHS, the World Health Organization, and your national health ministry or professional bodies such as a society of obstetricians and gynaecologists. A practical habit is to check whether two or three independent, trustworthy sources say the same thing before acting on anything.

Be extra careful with anything that tells you to stop a prescribed medicine, avoid a recommended test, or buy a product from the person giving the advice.

A word on AI chatbots

More people now ask AI chatbots about their health. They can be good at explaining medical terms in plain language, summarising what a condition is, or helping you think of questions for your doctor. They can also be wrong. The World Health Organization has cautioned that large language models can produce answers that sound authoritative and plausible but contain serious errors, especially on health questions, and that they may not protect the sensitive data you share.

So use them the way you would use a well-read friend: helpful for understanding, not a replacement for a clinician, and careful with what personal details you type in. If you want to think more about health data, see our piece on why your health data is valuable. Amara, the assistant in the Asele app, is built to help you understand your cycle and symptoms in your own language, and it is not a diagnostic tool either.

When self-research helps, and when it hurts

Research tends to help when it gives you words and structure. It can help you:

• Name what you are feeling, so you can describe it clearly
• Understand a diagnosis you have already been given
• Learn which symptoms are worth raising, and which are red flags
• Prepare questions so a short appointment covers what matters to you
• Recognise when you are being dismissed, and ask for a referral or second opinion

It tends to hurt when it replaces care or feeds anxiety. Watch for these signs:

• You are searching the same symptom over and over and feel worse each time
• You have settled on a diagnosis and are looking only for evidence that confirms it
• You are delaying seeing someone because the internet said it was probably nothing
• You are trying treatments or supplements on advice from strangers

If searching has started to take over your day or your sleep, that is worth mentioning to a clinician too. Our post on anxiety and depression in women covers when worry needs support.

How to bring your research to a doctor

Many women worry about sounding like they "Googled it". Coming in informed can be a strength, as long as it opens a conversation rather than closing one. The trick is to lead with your experience and use research as questions.

• Start with your symptoms, not your conclusion. "I have had pelvic pain every month for six months, and it stops me working" lands better than "I think I have endometriosis."
• Then share what you read, as a question. "I read that painful bowel movements during periods can be linked to endometriosis. Could that apply to me?"
• Bring sources, not screenshots of comments. An NHS page or a guideline carries weight. A viral video usually does not.
• Bring your own record. Dates, patterns, and how symptoms affect your life are more useful than anything you found online.
• Ask what would change their mind. "What would make you want to investigate further?" helps you know when to come back.

For more on making appointments count, see how to talk to your gynaecologist.

Your own symptom history is the one source no search engine has. Asele helps you keep it: cycle tracking and symptom logging build the pattern over time, and the Asele Health Brief turns it into a summary you can take to your doctor. Amara can help you make sense of what you are noticing in Yoruba, Hausa, Igbo, Swahili, French, or English. You can find us at Asele.

When to skip the search and get help

Skip the search and seek care straight away for sudden severe pain, chest pain, difficulty breathing, heavy bleeding with dizziness or fainting, pain with a positive pregnancy test, or thoughts of harming yourself. In those moments, the right source is a clinician, an emergency department, or your local emergency number.

This post is education, not medical advice. Curiosity about your body is a good thing. Pair it with trustworthy sources and a clinician who listens, and it becomes one of your best tools.

References

1. Semigran HL, Linder JA, Gidengil C, Mehrotra A. Evaluation of symptom checkers for self diagnosis and triage: audit study. BMJ. 2015. pubmed.ncbi.nlm.nih.gov
2. Riemma G, et al. Assessing quality, reliability and accuracy of polycystic ovary syndrome-related content on TikTok: a video-based cross-sectional analysis. Int J Gynaecol Obstet. 2025. pubmed.ncbi.nlm.nih.gov
3. MedlinePlus, US National Library of Medicine. Evaluating Health Information. medlineplus.gov
4. World Health Organization. WHO calls for safe and ethical AI for health, 2023. who.int