{"id":14887,"date":"2019-02-28T07:51:25Z","date_gmt":"2019-02-28T06:51:25Z","guid":{"rendered":"https:\/\/www.omni-biotic.com\/en-uk\/how-gut-bacteria-influence-our-weight\/"},"modified":"2025-04-02T13:49:43Z","modified_gmt":"2025-04-02T11:49:43Z","slug":"how-gut-bacteria-influence-our-weight","status":"publish","type":"post","link":"https:\/\/www.omni-biotic.com\/en-uk\/blog\/how-gut-bacteria-influence-our-weight\/","title":{"rendered":"How do gut bacteria influence our weight?"},"content":{"rendered":"\t\t
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Gut Health & Weight: How Your Microbiome Shapes Your Body<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Your microbiome<\/strong><\/a> isn\u2019t just key to overall health; it plays a crucial role in how much you weigh<\/strong>. In this article, we\u2019ll explore how gut bacteria<\/strong><\/a> help digest food, how your lifestyle can change the composition of your intestinal flora, and whether you\u2019re truly “what you eat”<\/em>.<\/p>

As summer approaches<\/strong>, many of us set goals to get our bodies back in shape and shed those extra kilos<\/strong> gained over the festive season. The desired results often seem elusive after weeks of restrictive diets<\/strong>, hunger, and intense workouts. Even more frustrating, the scale may often revert to its starting point after just a few days. Meanwhile, others can seemingly eat whatever they want, without worrying about calories, and maintain their figure effortlessly.<\/p>

While genetics, metabolism<\/strong>, and personal lifestyle<\/strong> all play a part, the composition of your gut flora<\/strong><\/a> plays a central role in how food is digested and the energy your body produces.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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The Weighty Role of Gut Bacteria<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The World Health Organisation has raised the alarm: childhood and adolescent obesity has increased tenfold<\/strong> over the past 40 years. In 1975, less than 1% of children were classified as obese. Today, that number has surged to nearly 6% of girls and 8% of boys<\/strong>. Globally, almost one in three people<\/strong> is overweight, increasing the risk of serious health conditions like cardiovascular disease and diabetes.<\/p>

But why do some people gain weight more easily<\/strong> than others? Growing research suggests that the composition of our gut microbiome plays a crucial role. Scientists are particularly focused on the balance between two dominant groups of gut bacteria<\/strong><\/a>: Firmicutes<\/strong> and Bacteroidetes<\/strong>, which together make up over 90% of our intestinal flora<\/strong>.<\/p>

A simple rule of thumb? The more Firmicutes you have, the higher your body weight is likely to be.<\/strong> These bacteria excel at extracting extra calories from food, even from normally indigestible fibers. Studies show that an abundance of Firmicutes can increase energy absorption by around 10% per day<\/strong>\u2014equivalent to 200-250 extra calories<\/strong>, potentially leading to a weight gain of up to 10kg per year<\/strong>.<\/p>

On the other hand, people with a higher proportion of Bacteroidetes<\/strong> tend to have a leaner physique. These bacteria actively eliminate excess sugar from the intestine rather than storing it as energy. This is evident when comparing the calorie content in the faeces of individuals with different body weights: slim people excrete more unused calories than those who are overweight.<\/strong><\/p>

As research continues to uncover the link between gut bacteria and weight<\/b>, it\u2019s becoming clear that our microbiome plays a far more significant role in metabolism than we once thought.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n By focusing on gut health, you can naturally and effectively work towards achieving your ideal weight while improving overall well-being. <\/div>\n
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The Intestinal Trap: How Lifestyle Affects Gut Health and Weight<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Lifestyle choices are a major driver of rising obesity rates, especially in industrialised nations like the UK. A lack of physical activity<\/strong> doesn\u2019t just reduce energy expenditure\u2014it also affects the balance of gut bacteria, influencing digestion, metabolism, and weight gain. But one of the biggest culprits? Our modern diet.<\/strong><\/p>

In the UK, 70-80% of our diet<\/strong> consists of ultra-processed foods<\/strong>, packed with hidden sugars<\/a>, unhealthy fats, and artificial additives<\/strong> such as preservatives, emulsifiers, and artificial flavourings. These ingredients don\u2019t just contribute to weight gain<\/strong>; they also disrupt gut flora, leading to digestive issues and long-term health risks.<\/p>

If you take a closer look at nutrition labels while shopping, you\u2019ll notice that even a supposedly “healthy”<\/em> fruit yoghurt can contain a significant proportion of your daily recommended sugar and saturated fat intake<\/strong>. The body stores this excess sugar as fat, while the liver works overtime<\/strong> to process artificial additives.<\/p>

The Western diet<\/strong>\u2014high in red meat, dairy, processed foods, refined sugar, and salt, yet low in fibre<\/a>, fruit, and vegetables<\/strong>\u2014has serious consequences. A 2013 study<\/strong> found that this diet is a major risk factor<\/strong> for chronic inflammatory bowel diseases<\/strong>, such as Crohn\u2019s disease and ulcerative colitis<\/strong>. Within a short time, it can cause dysbiosis<\/strong>, an imbalance in gut bacteria, leading to:<\/p>