

Medically Reviewed By Margaret Etudo. Written By The Vitamins For Woman Team.
Many women with PCOS experience unexpected symptoms like heat intolerance, rapid heartbeat, and excessive sweating. Understanding how PCOS affects your body can be confusing, but knowledge can help you take back control of your health and comfort.
If you’ve ever found yourself drenched in sweat, heart racing, and feeling unbearably hot while others seem perfectly fine, you’re not alone.
Many women living with PCOS share these struggles, often alongside fatigue, swelling, and a general feeling of unwellness. These symptoms can feel even worse right before a period, when hormonal fluctuations peak. It’s easy to wonder if these issues are just part of PCOS or a sign of something more.
Women who have both PCOS and thyroid issues often report that heat intolerance and palpitations were actually early thyroid symptoms. Because thyroid dysfunction is more common in women with PCOS, it’s worth discussing thyroid testing with your doctor if these symptoms feel new or severe.
Research suggests that PCOS is associated with chronic low-grade inflammation. According to a review published in the Journal of Clinical Endocrinology & Metabolism, women with PCOS often have higher inflammatory markers compared to those without the condition (González et al., 2010).
Inflammation can contribute to symptoms like fatigue, bloating, and feeling generally unwell. When inflammation is combined with hormonal imbalances and metabolic changes, it can also impact how your body regulates temperature and heart rate.
Studies analyzing heart rate variability in women with PCOS show signs of autonomic nervous system dysfunction, which may partly explain rapid heart rate and palpitations (Costa et al., 2010).
Some women notice that heat intolerance and sweating become worse at higher weights. Weight loss, even modest, has been shown to improve insulin resistance and hormonal balance in PCOS. For example, one study found that losing around 5-10% of body weight can improve metabolic and reproductive health in women with PCOS (González et al., 2010).
This doesn’t mean weight is the only factor, but it can reduce symptom severity for some women. Approaching weight management with a balanced diet, resistance training, and stress reduction can be more sustainable than strict dieting.
Alongside lifestyle changes, some supplements may help support women with PCOS. Inositol, particularly myo-inositol, has been widely studied for its ability to improve insulin sensitivity and hormonal balance in PCOS.
Omega-3 fatty acids, found in fish oil supplement, may also reduce inflammation and support heart health. These aren’t quick fixes, but they can be part of a broader approach to feeling better.
If you choose to try supplements, look for reputable brands that are third-party tested. Many women find success incorporating myo-inositol powder or omega-3 capsules as part of their daily routine, alongside dietary changes and regular check-ins with a healthcare provider.
Because thyroid dysfunction and other conditions can mimic or worsen PCOS symptoms, it’s always wise to discuss new or worsening heat intolerance, palpitations, or excessive sweating with a healthcare professional.
Simple blood tests can check thyroid hormone levels and inflammation markers to rule out other causes.
Living with PCOS can feel like an endless balancing act, especially when your symptoms don’t fit the “classic” picture. If you’re struggling with heat intolerance, rapid heartbeat, or fatigue, you’re not alone.
Research shows that PCOS can affect more than just your reproductive health. With the right support, lifestyle changes, and possibly supplements like myo-inositol or omega-3s, you can take meaningful steps toward feeling better.
Always work with a healthcare provider to personalize your care. Small changes can make a real difference over time.
Costa, E. M., Sá, M. F., Canabrava, C. M., Freitas, J. R., & Soares, J. M. (2010). Analysis of heart rate variability in polycystic ovary syndrome. Arquivos Brasileiros de Cardiologia, 95(2), 144-150. https://pubmed.ncbi.nlm.nih.gov/20645891/
González, F., Rote, N. S., Minium, J., & Kirwan, J. P. (2010). Inflammation in polycystic ovary syndrome: role of obesity and insulin resistance. Journal of Clinical Endocrinology & Metabolism, 95(12), 5315-5320. https://pmc.ncbi.nlm.nih.gov/articles/PMC3309040/
Yıldız, S. (2015). Cardiovascular risk factors in polycystic ovary syndrome. Anatolian Journal of Cardiology, 15(7), 589-595. https://pubmed.ncbi.nlm.nih.gov/20455724/
medically reviewed by margaret etudo, BPharm. written by the vitamins for woman team.