What is nutrigenetics? How your DNA shapes what you should eat

We are all different. Different builds, different backgrounds, different lives. And yet the nutritional guidelines most of us follow were designed for an average person - a statistical midpoint that, in reality, describes almost no one.

 If you have ever followed dietary advice carefully and wondered why it did not seem to work the way it was supposed to, you are not alone. And the answer might not be about willpower or consistency. It might be about biology.

 The emerging field of nutrigenetics offers a different starting point. Rather than asking what the average person should eat, it asks a more useful question: what does your body, with its particular genetic makeup, do with the food you give it?

 This is the question Boone was built to answer. Because understanding what your body needs - not what everyone else's needs - is a very different thing. And it changes everything about how you approach food.

Why one-size-fits-all nutrition advice has its limits

National dietary guidelines exist for good reason. They are grounded in population-wide research and give us a sensible framework for eating well. But they are, by design, built for the average. They tell us roughly how much protein, fat, and carbohydrate most people need. They set reference values for vitamins and minerals based on what the majority of the population requires.

What they cannot account for is the variation between individuals - and that variation is significant.

Two people can follow identical diets and absorb nutrients very differently. One person may process folate efficiently from food. Another, due to a common genetic variant, may struggle to convert it into the active form the body can actually use. One person may metabolise caffeine quickly with no adverse effects. Another may process it slowly, meaning the same cup of coffee has a very different impact on their body.

These differences are not random. They are written into your DNA. And understanding them is the foundation of nutrigenetics.

"Your genes do not change. But understanding them changes how you can approach your diet - from guesswork to genuine, personal insight."

So what exactly is nutrigenetics?

Nutrigenetics is the study of how genetic variants affect the way your body responds to nutrients in food. It sits at the intersection of genetics and nutrition science, and it has been developing alongside advances in genetic research for decades.

In practical terms, nutrigenetics looks at specific points in your DNA - known as single nucleotide polymorphisms, or SNPs - that have been linked through peer-reviewed research to differences in how people absorb, process, and utilise nutrients. These are not rare or obscure variants. Many of them are extremely common. What varies is which combination of them you carry.

It is worth noting that nutrigenetics is sometimes confused with a related field called nutrigenomics. The distinction matters:

• Nutrigenetics looks at how your genes affect your response to food. This is based on the DNA you were born with - it does not change.

• Nutrigenomics looks at how food affects the expression of your genes. This is dynamic and can shift depending on what you eat over time.

Boone is rooted in nutrigenetics - your fixed genetic profile, analysed to give you a clearer picture of how your body is built to handle what you eat.

Where the science comes from

Nutrigenetics is not a wellness trend. It is a field built on decades of genetic research, accelerated by the completion of the Human Genome Project and the subsequent ability to identify and study the variants that influence human health and physiology.

Boone's reports are built on peer-reviewed research - drawing on published studies to identify the genetic markers with the most established and consistent links to nutritional response. Our approach was developed alongside the Quadram Institute, one of the UK's leading centres for food and nutritional science, and shaped with input from nutritionists, dietitians, sports nutritionists, and geneticists.

The goal was never to map every gene that has ever appeared in a study. It was to identify the markers where the evidence is strong, the nutritional implications are clear, and the insights are genuinely useful for the people using the app.

What your DNA can tell you about your nutrition

The Boone DNA Nutrigenetics report covers five broad areas of nutrition - each one shaped by peer-reviewed research into how genetic variants influence the way your body handles food. This is not a general health assessment. It is a specific picture of how your biology interacts with what you eat, built to give you insights you can actually act on.

For each area, the Boone app tells you your genetic result, what it means in plain language, why it matters for your diet, which genes are associated with it, and how you can work with your result - including which foods to eat more of and which to be more mindful of. It also connects those insights to your real food life, showing you which foods you have scanned that are relevant to each area and how your average intake from your food log compares to what your profile suggests.

Here is what those five areas cover.

1. Glucose and energy regulation

Carbohydrates are the body's primary fuel source - but how efficiently your body regulates blood glucose in response to carbohydrate intake varies from person to person, and genetics plays a role in that variation.

Some people are genetically well-suited to higher carbohydrate intakes and maintain stable energy levels as a result. Others may have variants that affect how quickly they process glucose, which can influence energy levels and how satisfied they feel after meals. Understanding your genetic profile in this area can help you think about the type and balance of carbohydrates in your diet in a way that supports consistent energy through the day.

This is not about cutting carbohydrates or following a specific diet plan. It is about understanding how your body is built to handle them, so you can make more informed choices about the foods that work best for you - all within the context of a balanced diet that aligns with government nutritional guidelines.

2. Fats and lipid handling

Dietary fat is essential - it supports brain function, helps the body absorb certain vitamins, and plays a role in cell health. But not all fats behave the same way in every body, and your genes influence how you process different types of dietary fat.

Boone looks at your genetic profile across saturated fats, unsaturated fats, and omega-3 fatty acids. For each of these, your variants can affect how your body responds to intake - including how it handles lipids in the bloodstream. This does not mean certain foods are off limits. It means understanding which types of fat your body is best equipped to process, so you can think about balance in a way that is right for you rather than following generalised advice.

Omega-3 fatty acids are a good example of this in practice. They are widely recognised as beneficial, and government guidelines encourage regular consumption of oily fish for this reason. But genetic variants can affect how efficiently the body converts plant-based omega-3 into the forms it can use most readily - meaning the best sources of omega-3 for you may differ from the best sources for someone else.

3. Protein preference and protein quality

Protein is fundamental to the body - it supports muscle maintenance, contributes to satiety, and provides the building blocks for countless biological processes. Government guidelines give us a baseline for daily protein intake, but your genetic profile can offer a more personal picture of how your body uses dietary protein.

Boone looks at variants associated with protein utilisation - how well your body processes protein and which sources may be most effective for you. For most people this adds a useful layer of nuance to decisions they are already making. For athletes and active people, it can be a particularly valuable input when thinking about fuelling and recovery.

The result is not a prescription. It is context - a way of thinking about protein quality and variety that goes beyond simply hitting a daily gram target.

"The goal is not to follow a set of genetic rules. It is to understand your body well enough to make food choices that genuinely work for you."

4. Vitamins and minerals

This is one of the most detailed areas of the Boone report - and for many people, the most eye-opening. Micronutrient deficiencies are more common than most of us realise, and they are not always simply a result of not eating enough of the right foods. Your genes influence how well your body absorbs and processes specific vitamins and minerals, meaning two people with similar diets can end up with very different nutrient status.

Boone analyses your genetic profile across a comprehensive set of micronutrients:

For each of these, the Boone app shows your result, explains what it means, identifies the genes involved, and gives you clear guidance on which foods to prioritise and which to be more mindful of - all grounded in the same nutritional evidence base that informs government dietary guidelines.

5. Lifestyle factors - caffeine, alcohol, lactose, snacking, and taste

The fifth area of the Boone report covers what we call lifestyle factors - genetic variants that shape how your body responds to some of the most familiar parts of everyday eating and drinking. These are often the areas where people notice the starkest differences between themselves and others, and where having a genetic explanation can be genuinely illuminating.

Caffeine

Caffeine is the world's most widely consumed psychoactive substance - and the way people respond to it varies enormously. Some people can drink coffee in the evening and sleep without difficulty. Others find that a single cup in the afternoon disrupts their sleep entirely. Some feel alert and focused after caffeine. Others feel anxious or unsettled.

A significant part of this variation comes down to a gene called CYP1A2, which controls how quickly your liver metabolises caffeine. Fast metabolisers process caffeine efficiently and tend to experience fewer lingering effects. Slow metabolisers break it down more gradually, meaning caffeine stays in the system longer and can have a more pronounced impact.

Knowing which profile you carry does not mean you need to stop drinking coffee. It means you have a clearer picture of why your relationship with caffeine is the way it is - and can make choices about timing and quantity that work with your biology rather than against it.

It is worth noting that government guidelines on caffeine intake provide a sensible framework for everyone. Your genetic profile adds a personal layer to that picture, not a reason to override it.

Alcohol

How your body processes alcohol is partly determined by your genes. The enzymes responsible for breaking down alcohol vary in efficiency between individuals, and these differences are influenced by specific genetic variants.

Boone looks at your alcohol metabolism profile - not to make judgements about drinking habits, but to give you a clearer understanding of how your body is built to handle alcohol. This is useful context for anyone thinking about their relationship with alcohol and how it fits into an overall approach to looking after themselves.

As with all areas of the Boone report, this sits alongside - not in place of - the government guidelines on alcohol consumption, which are there for good reason and apply to everyone regardless of genetic profile.

Lactose

Lactose is the sugar found in dairy products, and the ability to digest it comfortably into adulthood is determined almost entirely by genetics. The gene responsible for producing lactase - the enzyme that breaks down lactose - switches off after childhood in many people worldwide. Others carry a variant that keeps lactase production going throughout their lives.

This is known as lactase persistence, and it varies significantly by ancestry and geography. It is one of the clearest examples of how genetic variation shapes something as fundamental as which everyday foods your digestive system handles comfortably.

Understanding your lactose profile helps you make sense of how your body responds to dairy - whether that means knowing why certain products cause discomfort, or simply understanding that your easy relationship with dairy is not universal.

Some of the most useful insights from nutrigenetics are not about obscure biology. They are explanations for things you have noticed about your own body your whole life.

Likelihood to snack

Appetite and the urge to snack between meals are not purely a matter of willpower or habit. Genetic variants linked to appetite regulation and satiety signals play a role in how hungry you feel between meals and how quickly you feel full after eating.

Boone looks at variants associated with snacking behaviour - not to label anyone as having a problem, but to offer a biological context for something many people notice about themselves. If you tend to feel hungry shortly after meals, or find it difficult to go long periods without eating, there may be a genetic component to that experience.

Understanding this can help you think about meal composition and timing in a way that works with your appetite signals rather than fighting them - choosing foods that support satiety for longer, for example, or structuring your day to accommodate your natural hunger patterns.

Taste perception

Your genes influence how you experience taste - including your sensitivity to bitter, sweet, and fatty flavours. This is more significant than it might initially sound. Taste perception shapes food preferences from an early age, and those preferences have a direct influence on dietary habits.

A well-studied example is the TAS2R38 gene, which influences sensitivity to bitter compounds. People with certain variants of this gene experience bitterness far more intensely than others - which can explain a strong aversion to foods like broccoli, Brussels sprouts, and certain teas or coffees. Others with different variants barely register the same compounds at all.

Knowing your taste perception profile does not change what you taste. But it can reframe the conversation about food preferences in a useful way. Dislikes that might otherwise seem arbitrary often have a genetic basis - and understanding that can open up different approaches to building a varied, balanced diet that works for you.

From saliva to insight - how Boone works

 One of the most common questions people have about DNA nutrition testing is what the process actually involves. The short answer is that it is simpler than most people expect - a few minutes at home, a kit in the post, and your results in an app that connects your genetics to your real everyday diet.

Here is how it works from start to finish.

The food scanner

Scan any food product using the app and Boone will show you how it relates to your personal nutrition profile. If your result highlights a particular vitamin or mineral, you can see at a glance whether a food you are considering is a good source of it. If your fat handling profile suggests paying more attention to the balance of saturated and unsaturated fats in your diet, the scanner makes that visible in real time - in your kitchen, at the supermarket, wherever you are making food decisions.

This is not a traffic light system or a list of foods to avoid. It is your genetic profile made visible through the food you encounter every day.

The food log

Logging your meals in the Boone app builds a picture of your diet over time. The app uses this to show you your average intake of the vitamins, minerals, and macronutrients that your genetic profile highlights - so you can see not just what your genes suggest you prioritise, but whether your actual diet is reflecting that.

This is one of the most practical features of Boone - the bridge between a genetic report and everyday life. Most people who have had any kind of health or nutrition assessment have experienced the gap between receiving information and knowing what to do with it day to day. The food log closes that gap by making your progress visible.

It also supports something that matters a great deal to good nutrition and is often overlooked in genetic testing: dietary diversity. A varied diet is one of the most consistently supported principles in nutritional science, and Boone's food log can show you how diverse your diet actually is over time - not just whether you are hitting targets for individual nutrients.

"A DNA test without a connection to real food is just a report. Boone is built to make that connection every day."

What about the science behind the analysis?

The genetic variants Boone analyses are selected based on peer-reviewed research - studies published in scientific journals that have examined the links between specific gene variants and nutritional response across large populations. Our approach was developed alongside the Quadram Institute, a world-leading centre for nutritional science based in Norwich, and shaped with input from a team that includes nutritionists, dietitians, sports nutritionists, and geneticists.

The goal was to build a test that is genuinely grounded in evidence - not one that overclaims what genetics can tell us, but one that makes the most of what the science reliably supports. Every insight in the Boone report is tied to that evidence base, and the nutritional guidance it generates is consistent with government dietary guidelines rather than a departure from them.

Boone is a tool for understanding your nutrition better. It is not a medical device, and it is not a substitute for advice from a GP, registered dietitian, or other healthcare professional. If you have specific health concerns, those conversations should always happen with a qualified professional.

Who benefits from understanding their nutrigenetics?

Nutrigenetics is not a niche interest for scientists or elite athletes. It is relevant to anyone who eats - which is to say, everyone. But there are certain groups of people for whom the insights tend to be particularly useful, and who often find that understanding their genetic profile reframes things they have been wondering about for years.

People who have tried different approaches to eating and found the results inconsistent

If you have moved between different ways of eating over the years - trying approaches that worked well for other people and getting mixed results yourself - you will know how frustrating that experience can be. It is easy to conclude that you are doing something wrong, or that eating well is simply more complicated than it is supposed to be.

Nutrigenetics does not promise a perfect diet. But it does offer something valuable: a biological starting point that is specific to you. Understanding how your body handles carbohydrates, processes certain fats, or absorbs particular vitamins gives you a more informed basis for the food choices you make - rather than borrowing a framework designed for someone else's biology.

Health-conscious adults looking to go beyond generic advice

There is a growing group of people who are already engaged with their nutrition - reading labels, thinking about food quality, perhaps supplementing - but who find that generic guidance only takes them so far. They are not looking for a basic introduction to eating well. They are looking for the next layer of understanding.

For this group, nutrigenetics tends to be genuinely illuminating. Questions that have been sitting in the background - why do I feel better on some diets than others? Am I actually absorbing the supplements I take? Is my iron intake enough given how I feel? - often get clearer with a genetic picture to add to everything else they already know about themselves.

Boone is particularly useful for people who are already motivated and just want better information to act on. The food log and scanner work best when used consistently, and people who are already engaged with thinking about food tend to get the most from them.

Athletes and active people

For people who train regularly - whether that is competitive sport, gym-based fitness, or simply an active lifestyle - nutrition is already a central consideration. Macronutrient balance, recovery, energy availability, and micronutrient status all have a direct bearing on how the body performs and responds to training.

Genetics adds a personal dimension to all of these. Your protein utilisation profile, your carbohydrate response, your omega-3 processing, your vitamin D status - all of these have implications for how you fuel and recover, and all of them vary genetically between individuals. Understanding your profile does not replace the fundamentals of sports nutrition. It adds a layer of personalisation on top of them.

Whether you are tracking performance metrics closely or simply want to support an active lifestyle as well as possible, knowing how your body is built to handle the foods you eat is a useful input alongside everything else you are already paying attention to.

"Genetics is not the whole picture. But it is a part of the picture that most people have never had access to before - and that changes what is possible when it comes to understanding your own nutrition."

What nutrigenetics cannot tell you - and why that matters

Being clear about the limits of nutrigenetic testing is important -- not as a disclaimer, but because it is part of what makes Boone a trustworthy tool rather than an overclaiming one.

Your genes are one input, not the whole answer

How your body responds to food is shaped by many things beyond genetics. Your gut microbiome, your activity levels, your sleep, your stress, and the overall quality and variety of your diet all interact with your genetic profile. A genetic predisposition towards lower vitamin D absorption, for example, does not mean you will be deficient - it means the picture of your needs is more nuanced than a population average can capture.

Boone gives you a genetic layer to add to everything else you know about yourself. It is most useful when it sits alongside a generally good approach to eating, not as a replacement for one.

 It is not a medical assessment

Boone is not a medical device and your results are not a diagnosis of any kind. If you have concerns about your health, specific symptoms, or conditions that affect your diet, those conversations belong with a GP, registered dietitian, or other qualified healthcare professional. Boone can be a useful complement to those conversations - giving you more information to bring to them - but it does not replace them.

The science is still developing

Nutrigenetics is a relatively young field and our understanding of it continues to grow. Boone focuses on the variants where the evidence is strongest and most consistent - but new research emerges regularly, and what we know about the links between specific genes and nutritional response will continue to evolve.

This is one of the reasons Boone is built as an ongoing tool rather than a one-off report. As the science develops, so does the picture it can offer.

 You were never meant to eat like everyone else

 We started this article with a simple observation: the nutritional guidelines most of us follow were built for an average person. A useful baseline - but not a personal picture.

Nutrigenetics does not replace good nutrition. It does not override the fundamentals - eating a varied diet, getting plenty of vegetables, staying well hydrated, following the broad guidance that decades of research have given us. Those things matter for everyone, regardless of genetics.

What it does is add something that has been missing for most people: a biological starting point that is specific to them. An understanding of how their body handles carbohydrates, processes fats, absorbs vitamins, and responds to caffeine - built on peer-reviewed science rather than guesswork or population averages.

That kind of understanding changes the quality of the decisions you can make about food. Not by telling you what to eat in a rigid sense, but by giving you the context to make choices that genuinely work for your body rather than someone else's.

This is why Boone was built. Not as an answer to every nutrition question, but as a tool that helps you understand your own biology well enough to ask better ones.

"Most of us have spent years following advice that was written for no one in particular. Understanding your own genetics is the beginning of something more personal than that."

Frequently asked questions

These are the questions we hear most often about nutrigenetics and the Boone test.

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