What are the harms of having overly long foreskin on the penis?

An excessively long foreskin may lead to various health issues. The excess foreskin can easily accumulate dirt and bacteria, leading to smegma buildup and infections such as balanoposthitis. These conditions not only cause discomfort but may also affect daily life and work. Long-term chronic inflammation may irritate the glans penis and increase the risk of cancer. Additionally, an overly long foreskin may result in abnormal glans sensitivity, potentially impairing sexual function and causing problems such as premature ejaculation. For the sake of personal health, men with a long foreskin are advised to seek timely medical evaluation and, based on a doctor's recommendations, choose appropriate surgical or non-surgical treatments. At the same time, maintaining good personal hygiene is essential.