Cancer remains the second leading cause of death worldwide, with nearly 10 million lives lost in 2021 alone, according to WebMD. As awareness grows and early prevention becomes a focus, it’s crucial to recognize the symptoms of cancer early, especially since many can go unnoticed until the disease has advanced.
Some signs of cancer can even be more noticeable during the night, when the body is resting and less distracted by daily activities. Being aware of these signs could make a significant difference in early detection and treatment.
1. Night Sweats
One of the most commonly overlooked symptoms of cancer is night sweats. Many people experience hot flashes and excessive sweating during the night, but don’t realize it could be a red flag for cancer. This sweating can occur due to cancer fever or hormonal shifts in the body, often as a response to cancer treatment like hormone therapy for breast, prostate, and endometrial cancers.
In women with breast cancer, hot flashes are often linked to estrogen deficiency, while in men with prostate cancer, they can result from androgen ablation therapy. A study from 2003 noted that these hot flashes can be particularly troublesome and exhausting, especially for those with advanced cancer.
If night sweats are accompanied by unexplained weight loss, fevers, or persistent fatigue, it’s important to consult with a doctor, as this combination of symptoms could indicate the presence of cancer.

2. Insomnia
Another symptom that might point to cancer, especially when it occurs at night, is insomnia. While insomnia can be caused by stress, it can also be a sign of an underlying health issue, including cancer. People with insomnia may feel excessively tired, have difficulty concentrating, and experience irritability.
Cancer Research UK emphasizes the importance of being aware of unusual changes in your sleep patterns. If insomnia persists and interferes with your daily life, it could be a sign of something more serious, such as cancer. Seeking medical advice early can help with diagnosis and increase the chances of successful treatment.
Conclusion
If you experience night sweats or insomnia, particularly when accompanied by other symptoms like weight loss, fatigue, or fevers, it’s crucial to speak with your healthcare provider. Early detection is key, and addressing these symptoms can lead to more effective treatment in the early stages of cancer.
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