Major Warning Signs You Have Lung Cancer

3. Unexpected Male Breast Growth (Gynecomastia)

While rare, breast enlargement in men (gynecomastia) can be an unusual but crucial indicator of lung cancer, particularly certain aggressive types. Specific lung tumors, especially small cell lung cancers, can produce hormones like estrogen or substances that mimic hormones, disrupting the body's natural endocrine balance. This hormonal imbalance can stimulate breast tissue growth. While many causes of gynecomastia are benign, if it appears suddenly, is unilateral, or accompanied by other lung cancer symptoms, it should prompt immediate investigation. This is a subtle yet significant sign of paraneoplastic syndrome, where the cancer's presence affects distant organs.

4. Persistent Hoarseness or Voice Changes

A voice that sounds perpetually rough, raspy, or has lost its usual pitch – beyond what a cold might cause – is a red flag. This isn't just a "smoker's cough." A growing lung tumor located near the voice box or the recurrent laryngeal nerve can press on this nerve, which controls the vocal cords. This pressure interferes with their normal movement, leading to persistent hoarseness or even voice loss. If your voice changes dramatically and doesn't improve within a few weeks, especially if you also have a chronic cough, it's crucial to see a doctor. Early detection here can be vital.