Modern medical science has explained in great detail how hormones influence our moods, emotions, sleep, energy, and even relationships. Hormones such as serotonin, dopamine, cortisol, and oxytocin are now commonly discussed in health programmes and on social media. Science also shows that food, stress, environment, social interactions, and even screen exposure can affect hormonal balance. Medicines and synthetic hormones are also used to alter moods and mental states when necessary.