This claim is true, the consumption of energy drinks, like Redbull, is strongly correlated with a multitude of health complications, both physical and mental.
In a 2016 article, revised and updated in 2024, Public Health researchers from 4 different universities in the UK analysed and interpreted data from over 57 studies on the impact of energy drink consumption on human bodies. In their analysis, it was found that the consistent consumption of energy drinks has a strong positive correlation with short sleep duration, poor sleep quality, psychological distress, poor dental health, cardiovascular issues, increase in suicidal ideations, depressive tendencies, and a multitude of other issues.
As a result of the problems and threats to health caused by energy drinks, several countries, including Lithuania, Sweden, and Turkey, have banned the sale of energy drinks to individuals under a certain age. As more information surrounding the health effects of energy drinks is released, an increasing number of governments has moved forward with warning their citizens against consumption, or with a complete consumption ban for individuals under a certain age.
Sources:
https://www.sciencedirect.com/science/article/pii/S0033350623003189#bib34
https://bmjopen.bmj.com/content/6/10/e010380