Dietitian and Nutritionist, Maria notes that when clients are newly diagnosed with Hashimoto’s, one of the biggest challenges they face is simply navigating the amount of information available online, especially around nutrition. Many arrive feeling unsure about what they should prioritise in terms of nutrition, lifestyle changes and supplements, and how these choices relate to symptoms such as fatigue and brain fog.

She explains that nutrition and lifestyle can help support thyroid health and may contribute to improvements in symptoms such as fatigue and brain fog. However, there’s no single diet or exercise plan that works for everyone. Each person’s experience is different, so it’s important to understand individual needs and tailor nutritional therapy and lifestyle recommendations accordingly.

When it comes to using nutrition and lifestyle to support thyroid health and manage symptoms such as fatigue and brain fog, she often starts with a few fundamental areas. One of the first priorities is ensuring people don’t skip meals or deliberately aim for a calorie deficit. Food is important not only for providing nutrients but also for supplying energy, and when someone is already experiencing fatigue, further depleting energy stores through undereating can be unhelpful.

Eating at regular intervals helps ensure a more consistent supply of energy, may minimise cravings, and helps avoid blood glucose spikes and crashes. She also encourages keeping food choices simple, noting that nutrition doesn’t need to be complicated. Small, gradual changes over time are more realistic and sustainable than restrictive or overly complex approaches.

Alongside nutrition, the importance of daily routines such as sleep is also emphasised. Sleep plays a crucial role in supporting the immune system, particularly in people with Hashimoto’s. A lack of sleep can exacerbate autoimmune conditions and drive inflammation in the body, which may worsen symptoms. For this reason, aiming for seven to eight hours of sleep per night is encouraged as part of overall management.

Many people with Hashimoto’s wonder whether food can influence autoimmunity and how diet supports thyroid health. Autoimmune conditions such as Hashimoto’s arise when the immune system mistakenly targets the body’s own tissues, and nutrition can interact with this process in several ways. Food is more than fuel as it provides nutrients that influence hormone regulation and shape the signals that guide immune activity. Because of this, dietary patterns can play a role in supporting thyroid health and helping the body manage inflammation more comfortably. An anti-inflammatory approach to diet and lifestyle is often used as a foundation for people with Hashimoto’s, as it supports overall wellbeing and may help them feel more at ease with their symptoms.

When individuals begin exploring dietary changes, attention is often placed on everyday nutrition habits that can help ease symptoms such as fatigue and brain fog. One key focus is balancing protein at each meal, which helps steady blood sugar levels and supports hormone production and immune function. More stable blood glucose can translate into more consistent energy and fewer crashes throughout the day.

Another important area is choosing whole, minimally processed foods. These foods tend to place a lower inflammatory load on the body while providing essential nutrients that support thyroid and immune health. Alongside this, prioritising omega-3 rich foods, such as fatty fish, chia seeds and flaxseeds, is often encouraged, as these fats play a role in immune balance and brain function.

Reducing excessive intake of refined added sugars is also commonly addressed, as frequent sugar spikes and crashes can contribute to fluctuations in energy levels and cognitive fog.

Together, these habits are helpful because they support steadier energy, healthier thyroid hormone pathways and reduced inflammation, all of which are closely linked to the day-to-day symptoms many people with Hashimoto’s experience.

In many Asian dietary patterns, certain nutrients can be present in either excess or deficiency, and these imbalances may be relevant for people with Hashimoto’s. Maria notes that iodine is one example, as both too much and too little can affect thyroid function. In some Asian diets, iodine intake may be higher due to regular consumption of seaweed and seafood.

Selenium is often low in the region, yet it plays an important role in supporting and protecting thyroid tissue. Vitamin D deficiency is also widespread across many Asian countries, and low levels may influence autoimmune activity if left unaddressed. Iron and zinc are nutrients to be mindful of as well, particularly in predominantly plant-based or fish-based dietary patterns, as both support thyroid hormone production. Soy is generally safe in moderation, especially when consumed in traditional fermented forms, although very high intake may affect thyroid health for some individuals.

When supporting people with Hashimoto’s who may have nutrient imbalances, the focus is on understanding what the individual actually needs rather than making broad assumptions. This begins with a review of overall dietary patterns, symptoms, relevant lab results, and health history to identify where gaps or excesses are most likely. From there, priorities are set based on what is most relevant, such as fruit and vegetable intake, protein intake, iron and vitamin D levels confirmed through pathology testing, and potential low intakes of nutrients such as selenium or calcium based on food patterns.

Testing becomes particularly important when symptoms persist, when someone follows a dietary pattern that raises the risk of deficiency or excess, or before introducing supplements that could interfere with thyroid function. Common assessments may include a full thyroid panel, iron studies, vitamin D, vitamin B12, and markers of inflammation. A personalised evaluation helps ensure that changes are safe, targeted, and effective, allowing nutrition strategies to genuinely support thyroid and immune health while helping manage symptoms more confidently.

According to Maria, fatigue and weight changes are common challenges for people living with Hashimoto’s, with fatigue often being one of the most difficult symptoms to manage. When energy levels are low, even simple daily activities can feel overwhelming, and this persistent exhaustion can become one of the most discouraging aspects of the condition.

A practical early step is to assess for potential nutrient deficiencies, as low levels of nutrients such as iron, vitamin D, or B vitamins can contribute to fatigue and affect metabolic function. Nutrition therapy can then be tailored to address these gaps while supporting an anti-inflammatory dietary pattern that provides adequate energy throughout the day. This approach helps create a more stable foundation for symptom management and can support people in feeling more like themselves again.

Lifestyle strategies also play an important role. Reducing stress, improving sleep routines, and supporting regular physical activity or gentle movement can all contribute to better energy regulation and metabolic health. Together, these elements work in tandem to support overall thyroid health rather than relying on a single intervention.

For people struggling with fatigue, one of the simplest and most impactful starting points is learning to say no. Reducing unnecessary commitments helps preserve both emotional and physiological energy by limiting stress and preventing overextension. When individuals stop stretching themselves too thin, the nervous system has more opportunity to downregulate, which can support steadier energy levels, clearer thinking, and a more stable mood.

This approach is often achievable even during periods of significant fatigue, as it doesn’t require physical effort or major lifestyle changes. Establishing boundaries and protecting limited energy reserves can reduce burnout, build confidence, and create space for gradually introducing other supportive nutrition and lifestyle habits over time.

Gluten-free and anti-inflammatory diets are often discussed in relation to Hashimoto’s, but one of the biggest misconceptions is the belief that there’s a single dietary approach that works for everyone. People with Hashimoto’s vary widely in age, symptoms, gender, health history and cultural dietary patterns, which makes individual assessment essential. While an anti-inflammatory foundation is often helpful, more specific adjustments such as going gluten-free or dairy-free are introduced only when they’re relevant to a person’s symptoms or overall needs. This ensures that dietary changes are appropriate, effective and sustainable rather than unnecessarily restrictive.

In practice, decisions about whether someone may benefit from gluten-free or anti-inflammatory eating are guided by a combination of symptom patterns, medical history, and clinical markers, rather than a blanket approach. Digestive symptoms such as bloating, constipation, or reflux can be important signals, as can skin concerns, immune-related issues, ongoing fatigue, or brain fog. A personal or family history of coeliac disease or other autoimmune conditions is also taken into account.

Laboratory findings may further inform these decisions, including evidence of nutrient deficiencies, markers of inflammation, or elevated thyroid antibodies. Equally important is ensuring that any dietary change fits within the individual’s cultural context and lifestyle, so that it can be maintained long-term. This targeted, personalised approach helps identify when strategies such as gluten-free or dairy-free eating are genuinely useful, keeping recommendations evidence-based and focused on addressing symptoms that are most relevant to the individual.