Someday, you might go to the doctor, and the doctor may prescribe a pill, and in that pill may be a microbe or a collection of microbes that have met FDA standards upon which you can make health claims based on that treatment.

CNN: Probing the mysteries of probiotics

Armed with an understanding of a person's genes, doctors could prescribe the right pill first time.

ECONOMIST: Biotechnology

Doctors are free to prescribe the drug to anyone, however, and there are concerns that physicians will open "pill mills" and prescribe Qsymia to people who just want to lose a few pounds.

CNN: FDA approves new diet drug

Instead of being handed a hit or miss pill, your doctor will do a test and then prescribe a drug that will work, because it will be specifically designed to suit your particular genes.

BBC: Scientists hope to develop individually-targeted drugs

Dr. Sanjay Gupta, CNN chief medical correspondent: It's not illegal, but it is unethical to prescribe a placebo to someone who has no idea that he or she is getting a sugar pill.

CNN: Doctors admit prescribing placebos