Yes, it is normal for some individuals to experience mood swings before their periods start. This phenomenon is commonly referred to as premenstrual syndrome (PMS). PMS typically occurs during the luteal phase of the menstrual cycle, which is the time between ovulation and the start of menstruation.
The exact cause of PMS is not fully understood, but it is believed to be related to hormonal fluctuations, particularly changes in estrogen and progesterone levels during the menstrual cycle. These hormonal changes can affect neurotransmitters in the brain, leading to mood swings, irritability, anxiety, and other emotional symptoms.
It's important to note that while mood swings before menstruation are common, their severity and impact can vary significantly from person to person. Some individuals may experience mild mood changes, while others might have more intense emotional symptoms that interfere with daily life. If you find that your mood swings are severe or significantly impact your well-being, it's a good idea to speak with a healthcare provider. They can help determine if there are any underlying issues and suggest appropriate management strategies. In some cases, lifestyle changes, dietary adjustments, or medication might be recommended to alleviate symptoms.