A founder-physician perspective on nutrigenetics, NutriReady, and the end of one-size-fits-all nutrition advice.
In clinic, one sentence comes up again and again: 'Doctor, my friend lost weight with this plan. I followed the same plan, and nothing happened.'
For a long time, we tried to answer that sentence with willpower, calories, adherence, or meal timing. Sometimes that was fair. Often, it was incomplete. Two people can eat the same breakfast and have different glucose curves. Two people can take the same supplement and reach different blood levels. One person may tolerate lactose easily, another may feel bloated for half the day. One person drinks coffee after dinner and sleeps well. Another needs one espresso at noon and still feels wired at midnight.
That does not mean the old rules of nutrition are useless. A balanced diet still matters. Protein quality matters. Fiber matters. Sleep, movement, alcohol, smoking, stress, and medications all change the picture. But population advice has limits. It tells us what tends to help most people. It does not always tell us what this person, sitting in front of us, is likely to need.
This is where nutrigenetics becomes clinically useful. Nutrigenetics looks at how genetic differences may affect the way a person processes nutrients, responds to dietary patterns, and manages certain nutrition-related traits. It is not a shortcut around medical judgment. It is a better starting point for asking the right questions.
NutriReady, which we offer through our partnership with Nala Genetics, was built around that idea. The test analyzes genetic markers related to nutrient metabolism, absorption, and use, then presents the information in a way that a healthcare professional can discuss with the patient. I do not see it as a diet printed by a machine. I see it as a structured conversation about the body behind the diet.
That distinction matters.
A genetic report should not frighten a person into removing half the foods they enjoy. It should not push a patient into high-dose supplements without blood tests. And it should not replace a dietitian who understands the patient's health history, culture, budget, cooking habits, family life, and goals.
Take vitamin D as a simple example. A genetic tendency related to vitamin D status does not automatically mean a patient needs a high dose. As a physician, I still want to know the measured blood level, sun exposure, kidney function, liver function, current medications, and whether the patient is pregnant, breastfeeding, elderly, or living with a chronic disease. The genetic result helps me decide what to check and how closely to follow. It does not write the prescription by itself.
The same logic applies to many areas people ask about: caffeine response, lactose tolerance, salt sensitivity, fat metabolism, folate handling, iron balance, and the way the body may use certain vitamins or fatty acids. A result is not a label. It is a signal that needs context.
This is why I prefer to explain NutriReady as a way to reduce trial and error, not as a miracle diet test.
Most people have already tried enough trial and error. They have removed gluten without knowing whether they needed to. They have taken supplements because a friend recommended them. They have blamed themselves when a general plan did not work. They have followed advice designed for an average person, while their own body kept answering in a different accent.
A more personal nutrition plan begins with a calmer process. We look at the genetic report. We look at current symptoms. We check relevant laboratory markers when needed. We review medications and chronic conditions. Then we decide what is worth changing now, what should simply be monitored, and what can be left alone.
Some patients need a more targeted nutrition plan for weight management. Some need support for metabolic health. Some are athletes trying to understand recovery, energy use, or nutrient needs. Some are preparing for pregnancy. Some are not sick at all; they simply want a more informed way to take care of themselves.
The same report can lead to different plans for different people. That is not a weakness of nutrigenetics. It is the point.
As founders, we did not want to build a service that makes people feel defective because of their DNA. We wanted to build a service that helps patients and clinicians use genetic information with restraint, clarity, and care. The most useful result is often not a dramatic change. It may be a small adjustment: choosing a different type of fat, testing a nutrient level before supplementing, reducing salt more seriously, changing the timing of caffeine, or understanding why a certain plan has never felt right.
Genes do not decide your dinner. They do help us understand why the same dinner may not feel the same in every body.
For me, that is the promise of nutrigenetics. Not fear. Not perfection. A more honest reading of the person in front of us.