It’s still in its infancy, but scientists do a variation of this when they type a tumor for chemotherapy treatment. A Stanford doctor let his colleagues map his complete genetic makeup and that of his mothers.
They then tracked him for more than a year constantly taking blood and studying hi to find more information about personalized medicine. Other than a few surprises such as his risk for type II diabetes and high cholesterol, there wasn’t new information that came from the investigation. The result of the study isn’t what makes it interesting, but that a scientist offered to experiment on himself is.
Scientists of old used to experiment on themselves all the time, often to disastrous results. Scientists often have confidence in their own abilities and theories, but they could all to go the toilet the second it’s introduced into the bloodstream.
Current scientific standards and government rules are designed to keep this type of self-experimentation from happening, but I guess this scientist and his colleagues missed that class. Luckily, there wasn’t anything that could have caused him harm, but what if he found out he was a risk for some horrible disease. Self-experimentation is a bad idea.