Using open-source tools to analyse 100 health websites, which include WebMD, Healthline, Babycentre and Bupa, an FT investigation found that 79 per cent of the sites dropped “cookies” — little bits of code that, when embedded in your browser, allow third-party companies to track individuals around the internet. This was done without the consent that is a legal requirement in the UK.

https://www.ft.com/content/0fbf4d8e-022b-11ea-be59-e49b2a136b8d

https://www.mobihealthnews.com/15586/drugs-com-taps-healthline-to-monetize-its-3-6m-mobile-users