How Does Your DNA Affect Your Daily Food Intake?

Your DNA, or more specifically your genes, have fascinating interactions with your diet. These interactions are often bidirectional and form the basis of personalized nutrition through genomic biohacks. This has impressive applications in solving some of the most stubborn health related challenges, including undesirable weight gain and obesity. Here are the five ways by which your DNA could positively shape your diet:NutrigenomicsNutrigenomics is the mechanism by which your diet affects your genes, and not the other way round. The process has massive implications for your health, and especially over how you can use specific dietary components to protect yourself against serious killer diseases like cancers and issues like faster aging.Deficiency in key nutrients like Vitamin B9 or folate, Vitamin B12, choline & methionine can cause genomic instability and increased cancer risk. In contrast, specific foods like curcumin, resveratrol, green tea, broccoli, Brussels sprouts etc can help with genomic stability and help fight inflammation, oxidative stress and cancers.NutrigeneticsThese are the processes by which your genes affect your diet or consumed food and hence central to our theme here. At times, nutrigenetics is referred to by the wider umbrella term nutrigenomics. Your gene variants determine how you process specific nutrients, which explains why the same diet works differently for different people. Genetic tests like Eplimo can easily find this out.For instance, presence of certain variants of the SGK1 gene make those individuals more prone to high blood pressure from salt intake. Similarly, variants in the FTO gene are strongly linked to obesity risk. Other very common examples are variants in the CYP1A2 gene that determine how fast you metabolize caffeine and mutations in the LCT gene that determines whether you are at risk of lactose intolerance.Hunger & Satiety HormonesGhrelin, the hunger hormone, is produced mainly in the stomach and stimulates appetite, increases food intake as well as promotes fat storage. The production of ghrelin hormone is governed by the GHRL gene, and a common variant in this gene called RS696217 is associated with unnecessary hunger and higher obesity risk.Similarly, leptin is a hormone produced by the body’s fat tissues and regulates satiety or the feeling of fullness with regard to food. Production of leptin is governed by the LEP gene, while its utilization is controlled by the LEPR (leptin receptor) gene. Variants in either, especially LEP, can cause severe, early-onset obesity.Metabolic PaceGenes play a significant role in determining your metabolic pace. Studies show that genes account for up to 60 percent of the variations seen in the Resting Metabolic Rate between individuals. RMR is basically a measure of how much calories are burnt while you are sitting or doing light activities. It is different from Basal Metabolic Rate (BMR) that requires fasting and bed rest. Hundreds of genetic variants work together to set your RMR. These include variants in the UCP1 gene governing thermogenesis or heat production, the MC4R gene that influences how the body burns nutrients for energy, and genes governing mitochondrial efficiency. Building more muscles is a proven way to counter the negative impact of such variants and boost RMR.Gut MicrobiomeDoes your gut microbiome impact your genes more, or does your genes impact your gut microbes more? Definitely, it is the former, which is also a better known mechanism due to that greater impact.But that doesn’t mean that the reverse impact, from your DNA to your microbiome which accounts for around 10 percent of its composition, is insignificant in any way. For instance, your specific gene variants determine which bacteria thrive by influencing immune responses, metabolism, and food preferences.Specific genes, such as the LCT gene, directly correlate with the abundance of beneficial bacteria like Bifidobacterium. Genetics also influence how you digest food and your dietary preferences, which in turn feeds specific bacterial species. Other genetic factors too have been identified as having strong links to microbial diversity, which is a great marker for not only gut health, but overall health, performance and longevity.

How Does Your DNA Affect Your Daily Food Intake?

World Happiness Report 2026 Flags Social Media Harms On Adolescents' Mental Well-being

Menopause Can Raise Alzheimer Risk In Women, Neurologist Warns

Ozempic may reduce depression and anxiety risks in diabetics: The Lancet

Health Conditions A-Z

Study Links Widespread Use of Antibiotics During COVID To Surge In AMR Cases

How Does Your DNA Affect Your Daily Food Intake?

World Happiness Report 2026 Flags Social Media Harms On Adolescents' Mental Well-being