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Our modern processed diets are leading to poor immune functioning and increased risk of inflammatory conditions, allergy, and auto-immunity, researchers warn.Besides affecting immune functions and our own health, modern diets could also 'code' our DNA and gut bacteria to
pass on poor immune functions to our children.A team of scientists from Yale University in the U.S and the University of Erlangen-Nuremberg, in Germany, has said that
junk food diets could be partly to blame for the sharp increase in autoimmune diseases such as multiple sclerosis, including alopecia, asthma and eczema.
The new stark warnings come in a review published in
Nutrition Journal, which analysed the impact that the modern Western diet has on immune function and risk of ill-health related to poor immunity and inflammation.
Led by Dr Ian Myles from the National Institute of Allergy and Infectious Diseases at the US National Institutes of Health (NIH), the review analyses the scientific evidence for the impacts and mechanisms of harm for our over-indulgence in sugar, salt, and fat - as well as the data outlining the impacts of artificial sweeteners, gluten, and genetically modified foods.
"While today's modern diet may provide beneficial protection from micro- and macronutrient deficiencies, our over abundance of calories and the macronutrients that compose our diet may all lead to increased inflammation, reduced control of infection, increased rates of cancer, and increased risk for allergic and auto-inflammatory disease," warned Myles in his review.
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In summary, there is enough quality, direct human evidence to conclude that many of the dietary choices in today's modern society appear to have harmful impacts on our immune system and likely on the immune system of our offspring," he said, adding that modern 'solutions' to the negative impacts of poor diet including probiotics and dietary supplements will cannot do enough to counterbalance the damage done - without additional lifestyle changes.
Each person harbors a unique and varied collection of bacteria that's the result of life history as well as their interactions with the environment, diet and medication use. Western diet and lifestyles consisting of fast and
processed foods are leading to a lower diversity of bacteria in the gut, say researchers.
"Of potentially greatest concern, our poor dietary behaviours are encoded into both our DNA scaffolding and gut microbiome, and thus these harmful immune modifications are passed to our offspring during their most critical developmental window," he warned.
Comment: More evidence is surfacing that having a healthy microbiome is one of the most important defenses against a host of diseases.