There are companies out there who have extensive data on which of hundreds of genetic SNPs (single nucleotide polymorphisms) correlate to which conditions that

There are companies out there who have extensive data on which of hundreds of genetic SNPs (single nucleotide polymorphisms) correlate to which conditions that have a genetic component. They take a DNA sample, run it through their assays, and then they give you a sixty (or whatever) page laymen's description of what all your various SNPs mean for you from a medical perspective. They then give your doctor a one hundred (or whatever) page detailed description which can then be used to guide your medical care in a wide variety of areas. For example, there might be three different main SNPs that relate to vitamin B-12. One might relate to how easily your body absorbs it. One might relate to how fast your body consumes it. One might relate to how it is disposed of in your body. And if you have the bad version of each of these SNPs, then that has a huge impact on your life -- because vitamin B-12 turns out to be pretty important (see https://www.mayoclinic.org/drugs-supplements-vitamin-b12/art-20363663 https://www.mayoclinic.org/drugs-supplements-vitamin-b12/art... ). But, there might be things you can do to improve your situation related to vitamin B-12, such as always using the methylated version. And maybe you just need to consume a lot more vitamin B-12 than most people. These are things your doctor can help you with, once they are armed with the DNA data. I'm not going to mention company names here, because we have a connection to the company we've used. And this is an expensive service. So, I don't want to be accused of shilling for this company. But my wife has already had her test. And I'm planning on getting mine as soon as I can. And there are multiple companies in this space. Even if you don't use the same company we have, I think the important thing is that if you have major medical problems that are unexplained or difficult to address, then I think this is the kind of service that you might want to look into.