Yes, hypothyroidism (underactive thyroid) can cause phantom smells, known as phantosmia, where you perceive odors that aren't actually present, such as smoke or burning toast, often linked to hormonal imbalances affecting the nervous system and smell perception. While aging, head injuries, and other conditions are also causes, thyroid deficiency is a recognized underlying systemic issue that can disrupt your sense of smell, and treating the hypothyroidism often resolves these phantom smells.
Hypothyroidism: A deficiency in thyroid hormones can also be linked to phantom smells.
This study indicates that taste and smell defects are common clinical abnormalities in primary hypothyroidism, and suggests that these defects may contribute to the anorexia and lack of interest in eating which are frequently observed.
Some possible symptoms include:
reported alterations in their sense of smell. Six pa- tients (33 per cent) noted decreased smell acuity (hy- posmia) and they complained that most foods tasted bland or pasty. Three patients (17 per cent) noted a distorted sense of smell (dysosmia). Both of these symptoms were present in 3 patients (17 per cent).
Phantom Smells
Experts do not know what causes the condition, but it may be related to neural communication dysfunction between olfactory signals and the central nervous system. Phantosmia has also been linked with aging, dental issues, anxiety, and hormonal changes, which are factors also associated with menopause.
The most common symptom of hypothyroidism regarding ear, nose and throat is nasal obstruction and rhinitis.
Common signs of thyroid disease are unexplained weight gain or loss, fatigue, insomnia, and depression or anxiety. But some symptoms of thyroid problems may not seem like they would have anything to do with a thyroid problem: Shaking and nervousness. Fast heart rate.
For optimal thyroid health, the one key nutrient to focus on daily is iodine, found in foods like dairy, eggs, and seafood, but also selenium, provided by just a few Brazil nuts, is vital for hormone conversion, making eggs or Brazil nuts great morning choices, alongside a balanced breakfast with protein, healthy fats, and fiber for overall function.
Those symptoms most commonly related to thyroid deficiency include forgetfulness, fatigue, mental slowness, inattention, and emotional lability. The predominant affective disorder experienced is depression. Perceptual changes may develop with alterations of taste, hearing, and vision.
Phantosmia may be caused by a head injury or upper respiratory infection. It also can be caused by aging, trauma, temporal lobe seizures, inflamed sinuses, brain tumors, certain medicines and Parkinson's disease. Phantosmia also can result from a COVID-19 infection.
Hypothyroidism can also cause hypersomnia, or the irrepressible need to sleep or lapses into sleep that occur on a daily basis. Hypersomnia can occur due to an underlying medical disorder, and hypothyroidism is considered the leading cause of hypersomnia due to a disorder in the endocrine system.
Hormones such as estrogen, progesterone, and testosterone can directly or indirectly affect how your taste buds and smell receptors function. For instance, estrogen influences the regeneration of your taste buds and smell neurons, while testosterone plays a role in maintaining the structure and function of taste buds.
There is also documented evidence of olfactory hallucinations for B12 deficient patients, i.e., smelling smells (usually unpleasant) that aren't actually there (medically called phantosmia).
Hyperosmia is an excessively sensitive sense of smell. Hyperosmia has been linked to autoimmune disorders like lupus, vitamin B12 deficiency, and more. Some people are simply born with it. Chewing gum and wearing a mask can help manage hyperosmia symptoms, as can treating the underlying cause.
The thyroid gland needs the mineral iodine to make thyroid hormones. Iodine is found mainly in seafood, seaweed, plants grown in iodine-rich soil and iodized salt. Too little iodine can lead to hypothyroidism. Too much iodine can make hypothyroidism worse in people who already have the condition.
Fruits Considered Harmful for Thyroid
Water is the healthiest drink for someone with hypothyroidism, because adequate water intake is crucial for every human, the Centers for Disease Control and Prevention says. It is thirst-quenching and calorie-free.
Generally, there's no diet to help with underactive thyroid — a condition that's also called hypothyroidism. You may see lots of claims about hypothyroidism diets. But there's no evidence that eating or avoiding certain foods will help the thyroid work better in people with underactive thyroid.
In very rare cases, a severe underactive thyroid may lead to a life-threatening condition called myxoedema coma. This is where the thyroid hormone levels become very low, causing symptoms such as confusion, hypothermia and drowsiness.
Daily habits such as irregular sleep, skipped meals, and stress can harm thyroid function. Improving your routine can offer significant relief and support hormonal recovery.
Anxiety - a feeling of nervousness, racing heart and trembling, or from worries about managing normal daily activities while coping with fatigue and loss of energy. Depression - low mood and difficulty enjoying things, tearfulness, loss of appetite and lethargy. Mood swings - irritability, snappiness or short-temper.
Hormonal changes alter mucus patterns
Thyroid disorders also disrupt normal mucus production, with underactive thyroid causing thicker secretions and overactive thyroid leading to excessive thin drainage.
Antihistamines such as loratadine (Claritin), fexofenadine (Allegra), and cetirizine (Zyrtec) can commonly be taken with thyroid medications. However, it's crucial to consult with your healthcare provider before starting any new medication, as individual health factors can influence drug interactions.
There is a connection between hypothyroidism and Meniere's desease too. Inflammatory or metabolic changes in patients with thyroid diseases may cause inflammation of the inner ear.