Your data belongs to you. It is not iamYiam’s to sell. Your data will only make it into the hands of third parties if you put it there.
Website and services usage statistics and overall DNA test results – all generic, anonymised, and aggregated information – are used to help improve the services iamYiam and the practitioners provide and assist with research into new products and services or general research in collaboration with a research entity (e.g. a university or research institute).
No information that could identify you individually is ever used in this way.