How DNA Testing Can Reveal Your Body’s Nutrient Absorption Levels

How DNA Testing Works for Nutrient Absorption

DNA tests for nutrition typically involve providing a saliva sample, which is analysed to identify genetic variations associated with nutrient absorption and metabolism. The test results offer a detailed report that highlights:

1. Which nutrients you may absorb poorly
   The test can reveal genetic predispositions affecting how well your body absorbs essential nutrients such as vitamin D, vitamin B12, iron, calcium, and magnesium.
2. Which nutrients you may need more of
   If your body struggles to absorb certain nutrients, the report may suggest dietary changes or supplements to compensate for this limitation.
3. Which nutrients you absorb well
   The test can also show nutrients your body processes efficiently, helping you avoid unnecessary supplementation and focus on those you may need more of.

This genetic information helps tailor nutrition strategies based on individual needs, ensuring a more personalised approach to maintaining health and well-being.

Common Nutrients Affected by Genetic Variations

Here are a few key nutrients whose absorption can be influenced by genetic factors:

1. Vitamin D
   Many people have genetic variations that reduce their ability to absorb vitamin D efficiently. This vitamin is crucial for bone health, immune function, and overall well-being. People with reduced absorption may need to increase their intake through fortified foods, supplements, or additional sun exposure.
   
   
2. Vitamin B12
   Vitamin B12 is essential for energy production and neurological function. Genetic variants in the FUT2 gene, for instance, can affect how well vitamin B12 is absorbed, potentially leading to deficiencies even in individuals who consume adequate amounts of it through diet.
   
   
3. Folate (Vitamin B9)
   Folate is essential for DNA repair, cell growth, and heart health. Genetic variations in the MTHFR gene can impair the body’s ability to convert folate into its active form, impacting overall health.
   
   
4. Iron
   Iron is vital for transporting oxygen in the blood, but some people have genetic variations that reduce iron absorption. Low iron levels can lead to fatigue, anemia, and reduced immune function.
   
   
5. Calcium
   Calcium supports bone health and muscle function, but certain genetic variations can influence how well it is absorbed. People with reduced calcium absorption may need to consume more calcium-rich foods or consider supplements to meet their body’s needs.
   
   
6. Omega-3 Fatty Acids
   These healthy fats, found in fish and flaxseed, are important for brain and heart health. Some individuals may have genetic variants that affect how their body metabolises omega-3 fatty acids, requiring them to consume higher amounts to achieve optimal levels.