Affinity Health, a leading provider of high-quality health cover, sheds light on Hashimoto’s disease, a common autoimmune thyroid condition that can affect energy levels, metabolism, hormones, mood, and overall wellbeing.
Hashimoto’s disease, also called Hashimoto’s thyroiditis, is an autoimmune condition, which means the immune system mistakenly attacks healthy thyroid tissue. Over time, this damages the thyroid gland and reduces its ability to produce enough thyroid hormones, leading to hypothyroidism, also known as an underactive thyroid.

What Is Hashimoto’s Disease Symptoms And Causes Explained

Affinity Health, a leading provider of high-quality health cover, sheds light on Hashimoto’s disease, a common autoimmune thyroid condition that can affect energy levels, metabolism, hormones, mood, and overall wellbeing.
Hashimoto’s disease, also called Hashimoto’s thyroiditis, is an autoimmune condition, which means the immune system mistakenly attacks healthy thyroid tissue. Over time, this damages the thyroid gland and reduces its ability to produce enough thyroid hormones, leading to hypothyroidism, also known as an underactive thyroid.
The condition is one of the most common causes of hypothyroidism worldwide and affects women far more often than men. In some cases, people may have Hashimoto’s disease for years before receiving a diagnosis.

Why the Thyroid Is So Important

The thyroid is a small, butterfly-shaped gland located at the front of the neck. Although small, it plays a major role in keeping the body functioning properly. Thyroid hormones help regulate metabolism, body temperature, digestion, heart rate, menstrual cycles, and even brain function.
When the thyroid slows down, many systems in the body also slow down. This is why Hashimoto’s disease can affect people in very different ways. Some may struggle with fatigue and weight gain, while others experience brain fog, depression, dry skin, constipation, or feeling unusually cold.
Because the symptoms can overlap with many other health conditions, Hashimoto’s disease is often difficult to recognise in its early stages.

Common Symptoms of Hashimoto’s Disease

Symptoms usually develop gradually and may become more noticeable as thyroid hormone levels continue to drop. Common signs and symptoms include:

• Constant tiredness or low energy.
• Unexplained weight gain.
• Sensitivity to cold temperatures.
• Dry skin and brittle hair.
• Hair thinning or hair loss.
• Constipation.
• Muscle weakness, aches, or joint pain.
• Depression or low mood.
• Brain fog or poor concentration.
• Heavy or irregular menstrual periods.
• Fertility difficulties.
• Puffiness in the face.
• Slower heart rate.

Not everyone experiences the same symptoms. Some people may only notice mild changes at first, while others may struggle with several symptoms that slowly worsen over time.

What Causes Hashimoto’s Disease?

The exact cause of Hashimoto’s disease is still not fully understood. However, medical experts believe it develops due to a combination of genetic, hormonal, and environmental factors.
People may have a higher risk of developing the condition if they:

• Have a family history of thyroid disease.
• Have another autoimmune condition, such as type 1 diabetes or coeliac disease.
• Are female.
• Have experienced hormonal changes, including pregnancy or menopause.
• Have previously had thyroid inflammation or thyroid problems.

Researchers also believe infections and environmental factors may play a role in triggering the condition in some people.
Stress does not directly cause Hashimoto’s disease, but long-term stress may worsen symptoms and make it harder for the body to cope with fatigue, sleep problems, and emotional strain.

How Is Hashimoto’s Disease Diagnosed?

Hashimoto’s disease is usually diagnosed through a combination of symptoms, medical history, physical examination, and blood tests.
Doctors commonly test:

• Thyroid-stimulating hormone (TSH).
• Thyroxine (T4) hormone levels.
• Thyroid antibodies, particularly thyroid peroxidase (TPO) antibodies.

High TSH levels together with low thyroid hormone levels may indicate hypothyroidism. The presence of thyroid antibodies can help confirm that the condition is autoimmune in nature.
In some cases, doctors may also request an ultrasound of the thyroid gland if swelling or nodules are present.
Because symptoms can resemble depression, anaemia, menopause, vitamin deficiencies, or chronic stress, proper testing is important to avoid misdiagnosis.

Can Hashimoto’s Disease Be Treated?

There is currently no cure for Hashimoto’s disease, but it can usually be managed effectively with the right treatment and monitoring.
If the condition causes hypothyroidism, treatment typically involves a daily thyroid hormone replacement medication called levothyroxine. This medication replaces the hormone the thyroid can no longer produce in sufficient amounts.
The aim of treatment is to restore hormone levels to a healthy range and improve symptoms. Many people begin feeling better once hormone levels stabilise, although it may take time to find the correct dosage.
Regular blood tests are important, because thyroid hormone needs can change over time.
Important to note is that people should never stop or adjust thyroid medication without speaking to a healthcare professional, as incorrect hormone levels may lead to further health complications.

Living with Hashimoto’s Disease

Eating well, staying active, and looking after overall wellbeing may help some people cope better with the symptoms of Hashimoto’s disease, but there is currently no proven diet that can cure the condition. People should also be cautious of online trends, “miracle” thyroid cures, detoxes, or supplements that promise fast results without proper medical evidence.
Daily habits that may support overall thyroid health and symptom management include:

• Following treatment plans carefully.
• Taking medication exactly as prescribed.
• Attending regular medical check-ups and blood tests.
• Getting enough rest and managing stress levels.
• Maintaining regular physical activity.

If left untreated, hypothyroidism caused by Hashimoto’s disease may increase the risk of high cholesterol, heart-related complications, fertility difficulties, and pregnancy complications. This is why early diagnosis, ongoing monitoring, and proper medical care are so important.

When to See a Doctor

Anyone experiencing ongoing fatigue, unexplained weight gain, hair thinning, constipation, low mood, or increased sensitivity to cold should consider seeking medical advice, especially if symptoms persist for weeks or months.
Although these symptoms may not always point to Hashimoto’s disease, they should not be ignored. Early testing and treatment can significantly improve quality of life and help prevent long-term complications.
Affinity Health offers members access to GP consultations, telehealth services, and ongoing healthcare support to help manage thyroid-related conditions and overall wellbeing.

About Affinity Health

Affinity Health is South Africa’s leading health cover provider, offering you a range of options at affordable rates, including access to the widest national provider network. We understand the importance of having medical insurance that meets your needs, budget, and lifestyle. Our healthcare products are designed to protect you and your family when it matters the most. We strive to give our members peace of mind and the highest standard of service. For more information, follow us on Facebook, Instagram and X.