DNA Stories Living with Genes

Consumer VS Medical DNA Testing: Unveiling Your Genetic Code!

Helping you dissect the best options you can have for your precious saliva sample.

Cedric Lee

Founder and CEO, ConnectingDNA · · 5 min read

Editor's note. This issue first ran in October 2023 and keeps the voice it was written in. We are more careful today about what a DNA test can tell you, and What your DNA can and cannot tell you sets out where we stand.

I have been involved in the field of healthcare, wellness, science and technology for over 20 years.

In my lifetime, I have seen the world of DNA testing make remarkable strides, making it increasingly accessible to the masses. Consumer genetic testing and medical genetic testing, while sharing a common scientific foundation, diverge significantly in their applications, insights, and implications.

In this article, I will share my insights on the intriguing similarities and differences between these two facets of genetic exploration, shedding light on their potential to empower individuals and shape our understanding of health, career, and lifestyle choices.

The Common Ground: Same Science

The instruments and laboratory processes used by both industries are often indistinguishable, underlining the reliability of the data generated.

Most people I speak to often do not realise that at the core of both consumer and medical DNA testing lies the same scientific foundation.

Both use advanced molecular techniques like PCR and DNA sequencing to decode our genetic makeup, and the instruments and laboratory processes used by both industries are often indistinguishable, underlining the reliability of the data generated.

An Illumina genome sequencer with its two flow-cell bays lit blue
Illumina’s new NovaSeq X series genome sequencers. Source from Illumina.

In fact, regardless of whether it is consumer or medical DNA testing, 80 to 90% of the sequencing market uses machines from the same brand, Illumina.

Consumer Or Medical DNA Test?

The primary distinction between consumer and medical genetic testing lies in the insights they unlock.

Now that we have explored the common scientific foundation, let us delve into the key differences between consumer and medical genetic testing.

While the scientific methodology remains consistent, the primary distinction between consumer and medical genetic testing lies in the insights they unlock.

A sample genetics laboratory report for a patient named Jean Helix, recording a heterozygous HNF1A mutation
Medical DNA report example with pseudonym name. Source from University of Exeter.

Medical genetic testing focuses on identifying specific genetic mutations or variations associated with diseases, offering invaluable information for healthcare providers in diagnosing, treating, and managing medical conditions.

On the other hand, consumer genetic testing casts a wider net, providing insights into nutrition, personality traits, and, to some extent, health predispositions.

Two tables of trait results from a consumer DNA report, headed Personality & Potential and Life Management
Example of a genetic report summary from a consumer DNA brand. Source from eBeauty DNA.

Indeed, consumer genetic testing can even captivate our imagination by allowing us to uncover our ancestral roots, and discover intriguing details like stress resistance, lactose tolerance, or susceptibility to gluten allergy. These are insights that fuel our curiosity and bridge the gap between science and personal identity.

Results: Challenge or Opportunity?

It is important that consumers seek professional guidance when interpreting their complex genetic information, even in the context of a consumer DNA test.

While genetic testing has made accessing our genetic information easier than ever, it also presents a challenge.

Unlike medical genetic testing, which is typically overseen by healthcare professionals, consumer tests place the responsibility on individuals to understand and act upon their genetic data.

A young woman at a desk looking worried over an open report
Consumer getting stressed out reading her DNA report. Generated by Midjourney AI.

This can be empowering but also daunting, as it necessitates a certain level of genetic literacy.

Therefore, it is important that consumers seek professional guidance when interpreting their complex genetic information, even in the context of a consumer DNA test.

Thankfully, more and more wellness businesses, from gym coaches to life coaches, are recognising the potential of incorporating their clients’ genetic insights to create highly personalised and effective services.

These insights can become a valuable tool in tailoring fitness routines, nutrition plans, and lifestyle advice, enhancing the overall well-being of individuals on a deeply personalised level.

Insights into athletic performance or cognitive traits can guide career decisions and personal development efforts.

As we navigate the complexities of interpreting genetic information, let us explore the rise of consumer genetic testing and its potential impact.

Personally, I see the rise of consumer genetic testing as a growing trend that aligns with our collective desire for greater control over our health and lifestyles.

The Straits Times article headed “More taking DNA tests to predict diseases; KKH sees fivefold increase in demand”, over a scientist at a laboratory screen
More consumers taking DNA tests to predict diseases. Source from Straits Times.

Admittedly, while the realm of consumer genetic testing offers an exciting frontier for self-discovery and empowerment, it is also essential to acknowledge the legitimate concerns that accompany this burgeoning field.

Privacy remains a paramount issue, as the sharing of sensitive genetic information raises questions about data security and potential misuse.

Moreover, the accuracy of results, while improving, can sometimes lack the robust scientific backing seen in medical genetic testing.

However, we must not let these challenges overshadow the tremendous potential that genetic testing holds for the betterment of our lives.

A consumer DNA report page on lactose, rating the ability to metabolise it as weak
Genetic trait insight from a consumer DNA brand. Source from eBeauty DNA.

Imagine a scenario where an individual discovers a genetic predisposition for lactose intolerance. Armed with this knowledge, they can make dietary choices that align with their genetics, potentially improving digestive health.

Similarly, insights into athletic performance or cognitive traits can guide career decisions and personal development efforts.

With responsible oversight, strong data privacy protections, and ongoing scientific validation, we can harness the insights gleaned from our genetic code to make informed decisions about our health, lifestyle, and career paths.

The key lies in striking a balance between the opportunities offered by genetic testing and the responsible management of its associated risks, ultimately ensuring a brighter and more genetically informed future.

Epigenetics: Our Genetic Multiplier

The genetic insights gleaned from consumer testing serve as a foundation upon which we can build healthier, more tailored lifestyles.

Finally, shifting our focus to the dynamic nature of our genes, let us explore the influence of epigenetic factors.

It is essential to recognise that our genes are not static blueprints but rather dynamic players in the symphony of life. Epigenetic factors, including lifestyle, environment, and diet, can modify gene expression.

A profile of a head with gears turning inside it, beside the line that genetics is a multiplier for our choices
Impact of our genetic disposition. Source from ConnectingDNA.

This epigenetic influence acts as a “genetic multiplier”, compounding the impact of our choices on our health and overall well-being. Thus, the genetic insights gleaned from consumer testing serve as a foundation upon which we can build healthier, more tailored lifestyles.

In conclusion, while consumer genetic testing and medical genetic testing share a similar scientific foundation, they also offer divergent insights and applications.

As our understanding of genetics and epigenetics grows, it promises even more personalised discoveries. What untapped potential lies within our genetic code, waiting to be unlocked?

Two professionals in white coats standing either side of a glowing double helix
Medical and Consumer DNA Professionals. Generated by Midjourney AI.

The Why DNA page sets out the Genetic Multiplier with the research behind it, and the Bio-Profile is what a consumer report turns into once somebody reads it properly.

Cedric Lee

Cedric Lee

Founder and CEO, ConnectingDNA

Cedric has spent over twenty years in healthcare, wellness and technology, and has taken his own DNA test with more consumer labs than he cares to admit. He writes the Living with Genes newsletter and founded ConnectingDNA to turn genetic reports into something a person can act on.

Connect on LinkedIn ↗

First published on Living with Genes, Issue 1. Rewritten and brought up to date for this site.

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