With five per cent of the population – mostly women – suffering from thyroid problems, it may seem surprising that such common conditions can be misdiagnosed. “Many symptoms of thyroid disease are vague and non-specific which mean GPs are likely to think it’s the menopause,” explains Kristien Boelaert, president of the British Thyroid Association and a professor of endocrinology at the University of Birmingham. “Guidance states you need several …