Hot flashes. Fatigue. Trouble sleeping. Changes in weight or mood. For women approaching or going through menopause, symptoms like these are often linked to hormonal changes. But menopause isn’t always the cause. Sometimes, a thyroid disorder may be responsible. Knowing the difference can help women get the right diagnosis and treatment.
When symptoms overlap
“How can you tell the difference between a thyroid problem and menopausal symptoms? That’s a great question,” said Israa Ali, MD, ABOM, an endocrinologist at The University of Texas Medical Branch (UTMB Health). “The two share so many symptoms that it’s easy to confuse them. But not all symptoms are due to menopause, and not all are caused by thyroid dysfunction. The key is knowing when intervention is needed.”
Part of the confusion lies in the fact that many menopausal symptoms, including anxiety, depression, disrupted sleep, weight gain, and brain fog, become more common during the same stage of life when women enter perimenopause.
“This is the reason why the two conditions coexist so frequently,” Ali said. “But how can you tell the difference? Clinically, it’s not possible to tell.”
An overactive thyroid, or hyperthyroidism, can cause sweating, anxiety, unintentional weight loss, and mood changes. An underactive thyroid, or hypothyroidism, can cause weight gain, hair loss, and depression.
Menopause itself does not meaningfully change thyroid function beyond the effects of aging.
“That means many times, if there is a thyroid abnormality around the time of menopause, it’s not necessarily driven by menopause. It may simply be part of aging,” Ali said.
A blood test can help tell the difference
Before attributing every symptom to menopause, Ali said thyroid disease should be ruled out when symptoms overlap or there is reason to suspect a thyroid problem.
“The diagnosis of thyroid disease needs to be biochemical, not clinical,” she said. “We do a blood test. That means we do not assume or make guesses. We test the blood in a laboratory.”
After taking a detailed medical history, discussing when symptoms began, and performing a physical examination, a provider can check thyroid-stimulating hormone, or TSH, levels.
“If the results are abnormal, then we evaluate for thyroid disease and other conditions that can overlap with menopause symptoms,” Ali said. “If those conditions are ruled out, we an attribute the symptoms to menopause.”
The approach to diagnosing menopause is different. Menopause is primarily a clinical diagnosis based on a woman’s age, menstrual history, and symptoms.
“We ask a patient if she’s had a period in the last 12 months or if she’s experiencing other symptoms,” Ali said. “Hormone levels can be checked after a woman hasn’t had a period for a year, but no blood test can determine menopause.”
Don’t dismiss symptoms as ‘just menopause’
So, is menopause or a thyroid disorder causing the symptoms? Ali said menopause may be part of the picture, but it is not necessarily the entire explanation.
“It deserves further evaluation, and it shouldn’t be dismissed,” she said. “Women with untreated thyroid dysfunction who are perimenopausal or menopausal are at higher risk for cardiovascular disease and osteoporosis. Estrogen loss during this stage of life can further increase those risks.”
The message, Ali said, is don’t try to diagnose the difference at home. Instead, women should talk with their healthcare provider when symptoms are new, persistent, or affecting their quality of life.
“The provider should be the one to pinpoint the difference for you,” she said. “I tell patients not to assume a diagnosis or allow symptoms to be dismissed as ‘just menopause,’ because we need to evaluate the thyroid and other possible causes as well.”
The right diagnosis can lead to relief
Ali emphasizes that women do not have to simply suffer through symptoms that interfere with daily life. Once the underlying cause is identified, many symptoms can be managed with appropriate treatment.
A healthcare provider can help patients understand the differences between menopausal symptoms and thyroid disease and determine when additional evaluation is needed.
“The right diagnosis starts with a thorough history, an appropriate physical evaluation, and blood work,” Ali said.
At midlife, changing hormones may explain some of what a woman is feeling. But they should not automatically explain everything. Knowing when to look beyond menopause can help uncover a thyroid disorder or another treatable condition, putting women on a clearer path to feeling better and protecting their health for years to come.