What the Gut Says to the Brain and How it Impacts Health

If you think you are in control of your behaviour, you may need to think again. There are more microbes living in our bodies than human cells (roughly 38 trillion bacteria). The communication between our gut bacteria and the rest of the body plays an enormous role in our health, and our mood.

The “Second Brain”

Along with the trillions of microbes in our gut, we also have neurons in a mesh-like structure called the enteric nervous system (ENS). This ENS is often referred to as the “second brain” because it functions independently from our actual brain. Despite its independence, the ENS has an ongoing conversation with our brain via the vagus nerve (alongside other mechanisms). This communication affects everything from your metabolism, mood, emotions, sleep and health.

How Your Gut Affects Your Health Risk

While we are still learning exactly how changes in your gut microbiome affect your health, we do know that there are negative consequences to an unhealthy gut. A gut microbiome that is out of balance can increase your risk for conditions such as diabetes and depression, can increase your risk for obesity, and can even play a role in colon cancer risk. Experts believe that when your gut microbiome is unbalanced, your intestinal lining becomes porous, which allows toxins to enter the blood stream. This affects your immune system, and as a result there seems to be an association with disease such as rheumatoid arthritis, fibromyalgia, inflammatory bowel disease, lupus and chronic fatigue.

To achieve greater health it is best to have a diverse gut microbiome, which is affected by diet and lifestyle factors.

What To Eat

Eating a well-balanced diet is often the place to start when addressing your health status. However specifically when it comes to improving gut health, here’s what you want to focus on:

  • Prebiotic Foods: such as fibre-rich fruits, vegetables, nuts, seeds and wholegrains such as oats serve as food for bacteria and encourage the growth of a healthy and diverse microbiome.
  • Prebiotic Nutrients: such as Omega 3 Fatty Acids which also encourage diversity of bacteria in the gut.
  • Probiotic Foods: there are foods that contain a variety of good bacteria. Fermented foods such as sauerkraut, kimchi, natto, kombucha, kefir and yogurt are packed with live cultures of probiotics. These help you digest food better, support the immune system and can even assist with reducing bloating, gas and diarrhoea.

Diet and Lifestyle Changes

Just like eating a health-promoting diet can help your gut bacteria, there are foods that may do harm. Here’s what you would want to avoid:

  • A Monotonous Diet: a diet lacking in a variety of different whole foods can lead to a decrease in gut bacteria diversity. This is because different foods promote the growth of different probiotics.
  • Processed Sugar: high intakes of sugar has been shown to decrease the biodiversity of gut bacteria and promote the growth of harmful bacteria.
  • Excess Red Meat: high intakes of red meat have been found in animal studies to reduce biodiversity and promote the growth of harmful bacteria. Further research is needed to assess whether this is true for humans, but the conservative approach is to avoid excess intakes of red meat.
  • Processed Foods: these foods are generally poor in nutrients, especially fibre, and thus are not going to promote the growth of a healthy and diverse microbiome.

Just like what we eat can affect our microbiome, so too can our lifestyle choices. Behaviours associated with unhealthy guts include drinking excess alcohol, smoking, sedentary living and poor sleep.

Supplements to Support the Microbiome

Diet and behaviour changes should always come first. However, if you have a gut microbiome that has suffered at the hands of longstanding poor diet and lifestyle choices (or because of a medical condition or medication), then supplements may be warranted.

  • Probiotics: taking a daily probiotic can strengthen your digestive and immune systems. Ideally you want one that includes bifidobacteria and lactobacilli.
  • Omega 3 Fatty Acids: we tend not to get enough omega 3 fatty acids in our diets, and so for our gut health (and the health of many more bodily systems), a supplement may be beneficial.
  • Vitamin D: supplementing with Vitamin D has been shown to increase the biodiversity and overall health of the gut in people who are Vitamin D deficient. An estimated one in five people in Africa have inadequate Vitamin D status, so this is a nutrient level worth checking with your next set of bloodwork.

Gut Health Leads to Overall Health

Improving overall health and wellbeing may very well start with improving the health and wellbeing of the microbes that live within us all. It’s important that the conversation between our main and “second” brains is positive. Start with the simple improvements to your diet and lifestyle, then consider adding targeted supplements to take things to the next level.

Shopping Cart
Scroll to Top
Open chat
1
Hello!
Please message us here if you have a question.
×