The ethical challenges to a programme such as this are multitudinous and not only limited to those being tested. "The cost of sequencing every DNA "letter" in a human genome has fallen faster than Moore's Law, from around $100 million in 2001, to under $1,000 today (although some say the overall cost in a clinical context is higher). This brings with it the prospect of routinely carrying out full-genome sequencing for everyone. That's precisely what Matt Hancock, the UK's Health Secretary, has said he wants to see as a part of the country's National Health Service (NHS)"