Harry Thorn, a 27-year-old fat-loss coach, initially attributed his sleepless nights, racing heart, and constant sweating to anxiety or an overactive personality. His symptoms persisted for years before a fitness test during his university studies revealed an abnormally high resting heart rate of 110 beats per minute. This discovery prompted a doctor's visit, where extensive testing for cardiac issues yielded no answers.
It was as a last resort that a thyroid problem was considered. A subsequent blood test confirmed that Thorn had hyperthyroidism, also known as an overactive thyroid. This condition occurs when the thyroid gland produces excessive thyroid hormone, leading to an acceleration of bodily processes. Common symptoms include a racing heart, excessive sweating, heat intolerance, anxiety, tremors, diarrhea, insomnia, and unexplained weight loss.
Dr. Saira Hameed, a consultant endocrinologist, noted that the non-specific nature of these symptoms often leads to them being mistaken for stress, anxiety, or overwork. She highlighted that heat intolerance unexplained by mood disorders should prompt consideration of an overactive thyroid. While hyperthyroidism affects about 1% of women, it impacts only 0.1% of men. The opposite condition, hypothyroidism, is about eight times more common in women.
Thorn's hyperthyroidism was caused by Graves' disease, an autoimmune condition where the immune system attacks the thyroid gland. Dr. Hameed explained that autoimmune conditions are more common in women, potentially due to the influence of female hormones like estrogen, while testosterone might offer a protective effect. Lyn Mynott, founder of Thyroid UK, added that in women, symptoms can sometimes be misattributed to menopause.
Despite men sometimes delaying seeking help, Mynott stated that once they do, hyperthyroidism can be diagnosed more quickly due to recognizable symptoms like sweating, feeling unusually hot, trembling, anxiety, and diarrhea. However, untreated hyperthyroidism can lead to severe mood disturbances, heart rhythm problems such as atrial fibrillation, osteoporosis, and heart failure.
Thorn realized he had likely been experiencing symptoms for years, including intense palpitations during exercise and a constant feeling of being overheated, coupled with an increased appetite he used to try and build muscle. After his diagnosis, he was prescribed carbimazole to regulate his thyroid hormone production. Initially on high doses, he experienced dehydration, but his dosage was adjusted to a low maintenance level. He now manages his condition by adhering to a low-dose weekly or bi-weekly regimen and avoiding certain trigger foods like sugary doughnuts.
Dr. Hameed advised that while there's no specific diet for hyperthyroidism, limiting caffeine can help manage symptoms like rapid heart rate and tremors. She emphasized the importance of early diagnosis, stating that treatments are effective and that men should not hesitate to consult their doctor and request thyroid blood tests if experiencing persistent, unexplained symptoms. 
