The Real Value of Genetic Testing Isn’t Prediction, It’s Preparation
One of the biggest misconceptions about genetic testing is that it tells people what their future will be. But honestly, it usually does something more practical, almost like a quiet warning system. It gives patients and their doctors specific details that can help them make better choices before a health issue turns into a crisis.
That difference is important for hereditary conditions like Lynch syndrome, a disorder that runs in families and is tied to a much higher lifetime chance of colorectal cancer, ovarian cancer, uterine cancer and a few other cancers too. People who have mutations such as the MSH2 gene mutation aren’t automatically going to get cancer, but knowing that risk helps shape screening timetables, the follow up care and also how odd or unusual symptoms are checked out in the first place.
Jackie Wenzel hesitated before getting tested. Lynch syndrome had touched her family before, and she wasn’t sure she wanted to know more. But she went through with it anyway, and the results showed she carries the MSH2 mutation. That single piece of information changed how she approached her health—she knew what symptoms to watch for, and she stayed on top of her checkups instead of letting things slide. Looking back, that decision mattered more than she ever expected.
For over a year, Wenzel dealt with periods that wouldn’t let up: heavy bleeding, cycles that dragged on too long and exhaustion that wore her down day after day. At first, doctors chalked it up to hormones, which is often the go-to explanation for symptoms like these. But Wenzel knew her Lynch syndrome put her at higher risk for uterine cancer, and that knowledge wouldn’t let her just accept the hormonal explanation and move on. She pushed for more testing. That persistence is what led doctors to find the uterine cancer.
Knowing about her inherited risk did not prevent the disease, but it changed the way she responded to it.
The diagnosis came with difficult decisions. Wenzel really wanted children, so instead of going straight into a hysterectomy, she worked with her physicians step by step, through fertility treatments, imaging, biopsies and hormone therapy, while her condition was kept under close monitoring the whole time. During that period, she managed to give birth to two daughters, and only after that did she undergo a radical hysterectomy. And now she is cancer-free, without having to abandon her dream of having children to reach that point.
A positive genetic test isn’t really a diagnosis, and it doesn’t automatically mean someone will definitely become sick. Still, the finding gives context. It helps patients along with healthcare providers sort out when more careful watching, or extra testing, could actually make sense. This can matter a lot with hereditary conditions, for example Lynch syndrome, because those problems frequently stay unnoticed until more than one person in the same family has already developed cancer. At that stage, the chance for earlier action may have been lost, even if everyone hoped things would be caught sooner.
Expanding access to testing has become an important part of changing that pattern. This is the gap jscreen has spent years trying to close. The nonprofit offers at-home testing programs supported by licensed genetic counselors, all aimed at preventing genetic diseases through education and screening. For many families, removing the practical barriers around testing can make the decision to learn about inherited risk much easier.
“Genetic testing isn’t about predicting the future, it’s about giving people the information they need to protect it,” said Karen Grinzaid, Chief Clinical Officer and Founding Executive Director of jscreen. “When someone understands their inherited risk, they may be better equipped to ask informed questions, advocate for themselves and recognize potential health concerns earlier.”
The broader goal is not to eliminate uncertainty. Medicine cannot promise that. What genetic testing can do is replace assumptions with better information. That knowledge may lead to earlier screenings, more productive conversations with doctors and greater confidence when something does not feel right.
Wenzel’s story demonstrates exactly that. Learning she carried the MSH2 mutation did not change her DNA, but it changed the way she approached her own health, allowing her to continue to ask questions until she found the answer.
For a lot of families that have a history of hereditary cancer, preparation can be the big benefit that genetic testing offers. It can’t tell what happens next, but it helps people meet what’s coming with a sharper awareness of the risks, and the options that are there.
