**Core Concept**
Non-contraceptive benefits of Oral Contraceptive Pills (OCPs) refer to the therapeutic uses of OCPs that are unrelated to contraception. These benefits are attributed to the hormonal components of OCPs, primarily estrogen and progesterone.

**Why the Correct Answer is Right**
The correct answer is one of the non-contraceptive uses of OCPs. OCPs are used to treat conditions such as dysmenorrhea, menstrual irregularities, endometriosis, and polycystic ovary syndrome (PCOS) due to their effects on the menstrual cycle and hormone levels. They also have a role in reducing the risk of ovarian and endometrial cancer. The hormonal components of OCPs can help regulate the menstrual cycle and alleviate symptoms associated with premenstrual dysphoric disorder (PMDD).

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because OCPs are commonly used to treat symptoms of endometriosis, such as pelvic pain and heavy menstrual bleeding.
* **Option B:** This option is incorrect because OCPs are used to manage symptoms of PCOS, including acne, hirsutism, and irregular menstrual cycles.
* **Option C:** This option is incorrect because OCPs have been shown to reduce the risk of ovarian and endometrial cancer.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that OCPs can be used to treat a range of non-contraceptive conditions, and their use should be considered in patients with symptoms related to menstrual irregularities or hormonal imbalances.

**Correct Answer: D.**