No, there is no direct evidence to suggest that too much protein intake can cause irregular periods. Irregular periods are typically influenced by hormonal imbalances, stress, underlying medical conditions, or other factors unrelated to protein consumption. However, maintaining a balanced and varied diet, including appropriate protein intake, can support overall reproductive health and hormonal balance. If you have concerns about your menstrual cycle, it is always best to consult with a healthcare professional for a comprehensive evaluation and personalised advice.