Updated on: August 4, 2020

Like anything, there are pros and cons to genetic testing. It’s a safe procedure that provides you with information, but that doesn’t mean that everyone should undergo genetic testing. This is true for at-home DNA test kits you can do on your own and professional testing that offers a more in-depth look into your genetics.

Whether or not you perform genetic testing for health reasons or to learn more about your ancestry is an entirely personal decision. But before you decide to move forward with testing, there are several things you should understand about the process, the technology, and the results you’ll get. This gives you a better look at the pros and cons of genetic testing.

First, let’s look at the benefits of genetic testing.

If you’re looking for a snapshot into your basic genetics, DNA test kits are a great tool to use. They not only give you information about your ancestry and heritage, but you’ll also have a foundation for making important lifestyle and health decisions.

Modern kits are non-invasive and affordable. It’s possible to get results from an at-home DNA test kit in just a few weeks. There’s no need for a lab visit or blood draw. You simply purchase the kit, swab your cheek, ship the swab off to the testing facility, and await your results.

What are the Pros of Genetic Testing and What Can You Do with Your Results?

Exploring the Pros and Cons of Genetic Testing: 3 Positive Things about Testing Your DNA and 3 Negative Things to Understand Before You Test 1

Once you have your results, what can you do with them?

1. Make Better Informed Health Decisions

Understanding your risk factors goes a long way in making smarter health decisions. Everyone should eat right and exercise, but what that means for each person varies.

Do you have an elevated genetic cancer risk? Are there certain biomarkers that make you prone to developing heart disease or a neurological disorder? You can combat that risk with everyday choices. Knowing your genetic health risks won’t eliminate them, but it does allow you to make the best decisions for your health. This information also provides peace of mind if you learn you lack the risk factors for certain health concerns that run in your family.


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2. Connect with Your Heritage and Locate Distant Relatives

One of the main reasons people use DNA testing is to learn about their heritage. It allows them to understand themselves better and explore the roots of their family trees. Some people even choose to use what they learn from genetic testing to track down distant family members.

Many DNA kits provide a profile of your heritage, sometimes revealing quite interesting results. Even more, some even incorporate ancestry into their service, with the potential to find distant relatives.

3. Make Family Planning More Comprehensive

Understanding the potential health issues that could affect your child is a powerful tool for parents, even before they decide to conceive. It can also give insight into a child’s health risks that otherwise would have no idea what they are dealing with. Genetic testing is a great tool for helping parents make decisions about their child’s health and life.

In addition to the three personal benefits of using genetic testing, there are also global benefits. The more we learn about the genetic links to certain diseases, the better the odds of developing effective treatment and potential cures.

What are the Cons of Genetic Testing and Why Would You Want to Avoid Testing?

Exploring the Pros and Cons of Genetic Testing: 3 Positive Things about Testing Your DNA and 3 Negative Things to Understand Before You Test 2

Of course, this isn’t to say that everyone should undergo genetic testing. There are negative aspects to using DNA testing kits. A few examples of the cons of genetic testing:

1. Some People with Obsess about Potential Health Risks

Learning that you have a higher risk than others for a health problem is stressful. For some people, this stress overwhelms them and it’s all they can think about. It is possible to have too much information. Knowing you might develop breast cancer or receive some other devastating medical diagnosis is stressful for most people. If you are the type that will be distracted from living a full and happy life after learning about your health risks, it’s better to forego genetic testing.

It’s also important to make sure you follow-up with your doctor or a genetic counselor if you take a test and discover a serious concern. Nobody should make misinformed decisions because of the information they gleaned from a DNA test.

2. It Exposes Information to Relatives without their Consent

It’s important to remember that your DNA test results don’t just affect you. The potential health risks and other information you discover through testing might also be risks for other people in your family. And if those people would rather not know about those risks, that’s their right. If you choose to undergo genetic testing, it’s best to keep some information to yourself unless you receive permission to share what you learn.

3. It Poses a Risk to Your Privacy

Genetic testing requires you to submit DNA to a lab, whether you are doing a test at home or under a doctor or lab supervision. Exploring your genetics might be worth the risk to you, but it’s still important to understand you are exposing very personal information. Before testing, research the company to which you are submitting your sample and make sure you understand the risks involved no matter how reputable or secure the testing service might be.

Whether or not you take a genetic test is a personal decision. What’s right for you might not be the same as what’s right for someone else. It might not even be what’s right for you in a year or five years or 10 years.

DNA testing can be an effective planning tool, but it can also be a Pandora’s Box. Understanding the risks testing poses and making a decision based on your personal circumstances is the best way to decide if genetic testing is right for you.


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Joel is a writer with a passion for the science of DNA and the power of its manipulation.

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