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How our diet affects our skin

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In this article

Skin concerns and food allergies
Functions of the gut
Problems that can result of a bad diet

Our skin is built from the inside out and is dependent on being supplied the required nutrition in order to be able to produce healthy skin cells on a daily basis. While we can’t stop the ageing process, we can slow it down by giving the body the nutrients it needs.

Skin concerns and food allergies

Food allergies can cause havoc in our bodies and cause various symptoms, some of which might show through your skin.

Allergies can build up over time and can go unnoticed making it difficult to link an allergy to a symptom you are experiencing like skin breakouts.

Common trigger foods include cows milk, eggs, soya, wheat, fish and nuts.

If you are experiencing a skin concern cutting out these foods might be the solution. When you have to cut out so many food groups it can be difficult to know what to eat so we have produced a healthy skin meal plan for you to try. This can be downloaded from here.

Functions of the gut

When we eat food it enters our gut, which runs from our mouths to our back passage.

  • The gut has three important functions:
  • Digest the foods we eat and convert them into vitamins.
  • Absorb nutrients into the body.
  • Prevent toxins entering the body.

70% of our immune system is based in our gut

Did you know that 70% of our immune system is based in our gut?

If we’re not feeding our bodies the best nutrition, we won’t be able to keep our bodies healthy. Studies are now revealing the strong link between our gut and our brains, calling the gut the “second brain.”

The gut is responsible for producing over 80% of our serotonin, known as our “happiness” molecule.

Our skin removes toxins from our bodies

Our bodies have seven channels to eliminate toxins – the liver, kidneys, lymphatic system, bowel, blood, lungs and skin being the largest one.

If any of these organs, like the liver is overloaded, the toxins will be eliminated from the skin, which is how skin issues can evolve.

A healthy diet for healthy skin

  • A healthy diet looks to
  • Provide your body with sustainable energy.
  • Reduce the levels of oxidative stress.
  • Reduce toxicity levels.
  • Reduce inflammation.
  • Reduce the risk of heart disease, diabetes, cancer and depression

Problems that can result of a bad diet

Not eating the right foods can lead to the following:

Leaky gut

This is when the barrier between your gut and your body allows substances that should stay in the gut pass through into the body. Once in the body the substances are able to cause inflammatory responses leading to further problems.


Our gut contains trillions of microbes including bacteria, fungi, viruses and parasites. The gut contains both good and bad microbes and when these become imbalanced with more bad microbes we call it dysbiosis.

Small Intestine bacterial overgrowth (SIBO)

This is when bacteria move from the large intestines into the small intestines where they can cause a range of problems.

Hannah de Gruchy BSc(Hons)

About Author

Hannah de Gruchy is a freelancer writer who specialises in health and wellness. She has a keen interest in the biology of skin and loves using her words to help separate the real science of skincare from the pseudoscience of some skincare brands. Hannah has a degree in Human Biology and many years’ experience working in laboratories around London. Using this experience, Hannah enjoys turning complex science into interesting, engaging and easy to digest pieces to read. In her spare time, Hannah runs, practices yoga and loves cooking plant based foods.

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