What will make my pupils larger?

Pupils can become larger, or dilate, due to several factors, including low light conditions, excitement, or arousal, as part of the body's natural response. Certain substances, such as stimulants or recreational drugs like cocaine and MDMA, can also cause pupil dilation. Additionally, medical conditions or the use of specific medications may affect pupil size. If you have concerns about your pupils or eye health, it's best to consult a healthcare professional.