TMZ Presents: Hollywood is High

From ayahuasca retreats to ketamine therapy, celebrities and scientists alike explore the healing powers and potential pitfalls of modern-day drugs. From ayahuasca retreats to ketamine therapy, celebrities and scientists alike explore the healing powers and potential pitfalls of modern-day drugs. From ayahuasca retreats to ketamine therapy, celebrities and scientists alike explore the healing powers and potential pitfalls of modern-day drugs. From ayahuasca retreats to ketamine therapy, celebrities and scientists alike explore the healing powers and potential pitfalls of modern-day drugs.