Write retargeting ads

I work in marketing at a private health clinic. Help me write ads for people who visited our site and left.

Context: Someone who read about fertility, sexual health, hair loss or mental health may not want adverts about it following them onto a shared family laptop.

Before you start, ask me for anything missing from this list:
- Which page they visited
- What usually stops people getting in touch
- What we can offer as a next step

Then:
1. Write for someone who already knows us.
2. Answer one doubt per ad.
3. Offer a small next step.

Give me:
- Four short ads
- The doubt each one answers

Rules:
- Use only the facts I give you. Where something is missing, write [detail needed]. Never invent a number, a name, a quote or a source.
- Give general health information only. Never write anything that reads as advice on a person's own condition, and never suggest a treatment is certain to work or free of risk.
- Write in plain English, in our voice if I have given you a sample.
- Do not tell me what the rules or regulations say. If something may be restricted, flag it and I will check.

Finish with a list headed "Check before this goes out". Include these, plus anything else our clinical lead or the registered manager who approves marketing should see:
- Whether this treatment is too sensitive to retarget at all
- Ad text that reveals what the person was reading about
- Cookie consent for the audience, and whether under-18s could be in it