DNA Gut Health genetic test

The test has over 40 genetic markers (SNPs), covering the following areas relevant to intestinal well-being:

A. Digestion

• Indigestion

  • Indigestion is a general term used to describe discomfort in the upper digestive tract, often including bloating, fullness, gas, or mild pain after eating. Genetic differences can influence how sensitive the digestive system is to food volume, fat content, and gastric motility (how quickly food moves through the stomach and intestines). Variations in these pathways may make some individuals more prone to experiencing indigestion even with balanced meals.

• Bile acid production and metabolism

  • Bile acids play a vital role in the digestion and absorption of dietary fats. Produced in the liver and stored in the gallbladder, they are released into the small intestine after meals to help break down fats into smaller components that the body can absorb more easily.

    Genetic factors can influence several aspects of bile acid function, including how efficiently they are produced, how effectively they are recycled within the gut, and how well they support the emulsification and absorption of dietary fats.

    When bile acid metabolism is not functioning optimally, it may contribute to digestive symptoms such as bloating, discomfort after high-fat meals, or changes in stool consistency. In some individuals, genetic variation can also affect how the digestive system responds to either elevated or reduced levels of bile acids, influencing overall gut comfort and fat digestion efficiency.

• Stomach acid production

  • Stomach acid plays a crucial role in breaking down food, activating digestive enzymes, and protecting against harmful microbes. Genetic variation may affect the regulation of gastric acid secretion. Too little stomach acid can lead to poor protein digestion, nutrient malabsorption (such as iron or B12), and feelings of heaviness after eating. Too much acid may contribute to reflux-like symptoms and irritation of the upper digestive tract. Understanding individual differences in acid production can help explain why common dietary triggers vary so widely between people.

• Digestive enzymes

  • Digestive enzymes are essential proteins that help break down carbohydrates, fats, and proteins into smaller molecules that the body can absorb and use for energy, growth, and repair. Genetic factors can influence the production and efficiency of key digestive enzymes, and when enzyme activity is reduced, food may not be fully broken down during digestion. This can result in symptoms such as bloating, gas, and, over time, potential nutrient deficiencies. In contrast, efficient enzyme function supports smooth digestion and optimal nutrient absorption, contributing to overall digestive comfort and metabolic health.

    Note: the lactase enzyme will be covered in section C.

B. Bowel health

• Gut microbiome diversity

  • Your gut microbiome is made up of trillions of microorganisms that live in the digestive tract. These microbes play an essential role in breaking down food, producing vitamins, regulating immunity, and supporting overall gut balance. Genetics can influence which microbial species are more likely to thrive in your gut environment. Some individuals naturally support greater microbial diversity, which is often associated with more stable digestion and better resilience to dietary changes. Others may be more prone to reduced diversity, which can make the gut more sensitive to stress, diet shifts, or medication use.

    Note that microbiome composition is highly adaptable, and lifestyle factors such as diet, fiber intake, and stress levels can significantly reshape it over time.

• Leaky gut

  • The intestinal lining acts as a selective barrier, allowing nutrients to pass into the bloodstream while keeping unwanted substances out. In some individuals, this barrier may become more permeable, a condition often referred to as “leaky gut.” Genetic factors can influence the strength of tight junctions in the gut lining, as well as immune system reactivity within the intestinal wall. When this barrier function is weakened, it may allow larger particles to pass through, potentially triggering immune responses and low-grade inflammation. This can contribute to digestive discomfort and increased sensitivity to certain foods or environmental triggers.

• IBS

  • Irritable Bowel Syndrome is a functional digestive disorder characterized by symptoms such as abdominal pain, bloating, and changes in bowel habits. While its exact cause is multifactorial, research suggests that genetics may play a role in how the gut communicates with the nervous system.

    Individuals with a genetic predisposition may have heightened gut sensitivity or altered gut motility, meaning the digestive system reacts more strongly to normal stimuli such as stress, food intake, or hormonal changes. IBS is also closely linked to gut microbiome balance and immune system regulation, both of which are influenced by genetic and environmental factors.

• Inflammation

  • Inflammation in the digestive system is a key factor in overall bowel health. While acute inflammation is a normal immune response, chronic low-grade inflammation can disrupt gut function and contribute to long-term digestive issues.

    Genetics can influence how strongly the immune system responds to triggers within the gut, including food components, microbes, and environmental stressors. Some individuals may have a more reactive immune profile, making them more susceptible to persistent inflammation. This inflammatory state can affect gut barrier integrity, microbiome balance, and overall digestive comfort.

C. Sensitivities and other predispositions

• Lactose sensitivity

  • Lactose sensitivity occurs when the body has reduced ability to break down lactose, the natural sugar found in dairy products. This is linked to lower activity of the lactase enzyme, which is responsible for lactose digestion. When lactose is not properly broken down, it can lead to bloating, gas, abdominal discomfort, and irregular bowel movements. Genetic variation plays a major role in determining whether lactase production remains active into adulthood.

• Gluten sensitivity
  • Some individuals experience digestive or systemic symptoms after consuming gluten, a protein found in wheat, barley, and rye. While gluten sensitivity is not fully understood, genetic predisposition may influence immune and digestive responses to gluten-containing foods. In these cases, the body may react negatively even in the absence of celiac disease, leading to discomfort, fatigue, or digestive disturbances.

• Celiac disease

• • Celiac disease is an autoimmune condition strongly linked to genetics. In individuals with specific genetic markers, gluten triggers an immune response that damages the lining of the small intestine. This damage can impair nutrient absorption and lead to a wide range of symptoms, including digestive issues, fatigue, anemia, and long-term nutritional deficiencies. Strict lifelong avoidance of gluten is required to manage the condition.

    Note: If you experience symptoms suggestive of celiac disease or carry genetic variants associated with increased risk, it is important to consult a doctor. Diagnosis typically involves blood tests for specific antibodies and, when needed, a biopsy of the small intestine or skin.

• Histamine sensitivity

  • Histamine sensitivity occurs when the body has difficulty breaking down histamine, a compound found in many foods and produced naturally by the immune system. When histamine accumulates, it can lead to symptoms such as headaches, skin reactions, digestive discomfort, and nasal congestion. Genetic differences in enzymes responsible for histamine breakdown may contribute to this sensitivity.

• Salt sensitivity

  • Salt sensitivity refers to how strongly an individual’s blood pressure responds to sodium intake. Some people experience significant increases in blood pressure when consuming high-sodium foods, while others are less affected. Genetic factors influence kidney function, fluid balance, and blood pressure regulation, all of which contribute to how the body processes salt.

• Thyroid and gut

  • The thyroid gland and digestive system are closely connected. Thyroid hormones influence gut motility, digestion speed, and nutrient absorption. Genetic predispositions affecting thyroid function can indirectly impact gut health, leading to symptoms such as constipation, bloating, or changes in digestive efficiency. In turn, gut health influences thyroid health by absorbing key nutrients and by supporting hormone conversion through the microbiota, creating a two-way relationship.

• Oxalates

  • Oxalates are naturally occurring compounds found in foods such as spinach, nuts, and chocolate. In some individuals, high oxalate intake can contribute to kidney stone formation or digestive discomfort. Genetic differences in metabolism and gut microbiome composition can influence how effectively oxalates are broken down and eliminated. This means some people are more prone to sensitivity than others.