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Autism and Nutrition:

How Does Nutrition Affect Autism? Focus: Magnesium


Autism and Nutrition - Welcome to our blog on Autism and Nutrition!

Here, we will explore the connection between what we eat and how it can impact individuals with autism spectrum disorder (ASD).





ASD is a neurodevelopmental disorder that affects communication, social interaction, and behaviour. It is estimated that 1 in 100 children in Australia are diagnosed with ASD. While the cause of ASD is not yet fully understood, research has shown that nutrition may play a role in managing some of the symptoms associated with the disorder.


In this blog, we will delve into the science behind how certain nutrients and dietary interventions can benefit those with ASD. We will also provide practical tips and strategies for incorporating a healthy and balanced diet into the lives of individuals with ASD and their families.

Our goal is to empower individuals with ASD and their caregivers with knowledge and tools to make informed decisions about their diet and nutrition and ultimately improve their overall quality of life. So, let's dive in and explore the fascinating world of Autism and Nutrition!


Why Nutrition is Important for Autism

Nutrition is an important factor in the development and treatment of autism. A balanced diet can help improve a child’s development, behaviour, and overall health.


Nutrition plays an important role in the lives of individuals with autism spectrum disorder (ASD) for several reasons:

  1. Gut-Brain Connection: Research has shown that there is a strong connection between the gut and the brain. The gut has a complex network of nerves, hormones, and bacteria that communicate with the brain through the nervous system, immune system, and other pathways. As a result, what we eat can affect our mood, behaviour, and cognitive function.

  2. Nutrient Deficiencies: Individuals with ASD may have a higher risk of nutrient deficiencies due to their selective eating habits, food aversions, and restricted diets. For example, some individuals with ASD may avoid certain textures, colours, or smells of food, which can limit their intake of essential vitamins, minerals, and other nutrients.

  3. Food Sensitivities: Some individuals with ASD may have sensitivities or intolerances to certain foods or food additives, which can cause digestive issues, inflammation, and other symptoms that can impact their behaviour and cognitive function.

  4. Co-Occurring Conditions: Individuals with ASD may have co-occurring conditions, such as gastrointestinal issues, seizures, and sleep disorders, which can be exacerbated by poor nutrition and dietary habits.

By addressing these nutritional factors, individuals with ASD can potentially experience improvements in their mood, behaviour, cognitive function, and overall quality of life. Therefore, individuals with ASD and their caregivers must prioritize a healthy and balanced diet as part of their treatment plan. There is a variety of nutrient deficiencies that have been linked to autistic symptoms, including deficiencies in omega-3 fatty acids, vitamin D, and magnesium.




In today's Blog, we will focus on the benefits of Magnesium.


Magnesium is an essential mineral that plays a role in over 300 biochemical reactions in the body, including regulating muscle and nerve function, maintaining heart rhythm, and supporting a healthy immune system. Magnesium is an essential mineral, which means that our bodies require it for various important functions but cannot produce it on its own.


Therefore, we need to obtain magnesium through our diet or supplements. Magnesium plays a vital role in numerous processes within our bodies, including muscle and nerve function, heart rhythm, bone health, energy production, and the synthesis of DNA and proteins. It also supports a healthy immune system, regulates blood pressure, and contributes to the production of hormones that control many bodily functions.


What impact does Magnesium deficiency have on someone living with ASD?


Research suggests that magnesium deficiency may be associated with certain symptoms and behaviours in individuals with autism spectrum disorder (ASD). Here are some ways magnesium deficiency may impact ASD:

  1. Impaired Social Skills: Magnesium plays a role in regulating neurotransmitters such as dopamine and serotonin, which are important for mood regulation and social behaviour. A magnesium deficiency may contribute to social deficits in individuals with ASD.

  2. Sleep Problems: Magnesium is involved in the regulation of the body's sleep-wake cycle by helping to relax muscles and calm the nervous system. Individuals with ASD often struggle with sleep problems, and magnesium deficiency may exacerbate this issue. And research has suggested that magnesium supplementation may improve sleep quality and reduce sleep disturbances.

  3. Increased Anxiety: Magnesium deficiency has been associated with increased anxiety symptoms. Individuals with ASD often experience high levels of anxiety, and magnesium deficiency may contribute to this issue.

  4. Challenging Behaviors: Magnesium plays a role in regulating stress and anxiety, and a deficiency may exacerbate feelings of stress and anxiety, potentially contributing to challenging behaviours in individuals with ASD.

While more research is needed to fully understand the connection between magnesium and ASD fully, ensuring adequate magnesium intake through diet or supplementation may be a beneficial addition to a comprehensive treatment plan for individuals with ASD.




There are several ways to increase magnesium intake in children with autism spectrum disorder (ASD) through diet. Here are some options:

  1. Include Magnesium-Rich Foods: Encourage your child to eat foods that are naturally high in magnesium. Some examples include:

  • Leafy green vegetables such as spinach, kale, and Swiss chard

  • Nuts and seeds such as almonds, cashews, pumpkin seeds, and sunflower seeds

  • Whole grains such as brown rice, quinoa, and oats

  • Legumes such as black beans, chickpeas, and lentils

  • Avocado

  • Bananas

  • yoghurt

  • Dark chocolate

  • Salmon/Tuna

  1. Consider Magnesium Supplements: If your child is not getting enough magnesium through their diet, a magnesium supplement may be beneficial. Talk to your child's healthcare provider to determine if a supplement is appropriate and to determine the appropriate dosage.

  2. Avoid Foods that Inhibit Magnesium Absorption: Some foods can interfere with magnesium absorption. These include foods high in phytates (such as whole grains and legumes), foods high in calcium (such as dairy products), and foods high in oxalates (such as spinach and rhubarb). While these foods are still important for a balanced diet, it's important to balance their intake with other magnesium-rich foods.

  3. Consider Magnesium Bath Salts or Epsom Salt Baths: Magnesium can also be absorbed through the skin. Magnesium bath salts or Epsom salt baths can be a relaxing way to increase magnesium levels in children with ASD. Be sure to talk to your child's healthcare provider before starting this type of therapy.

It's important to work with a healthcare provider to determine the appropriate approach for your child's needs and monitor magnesium levels over time.



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