Marcos gained the London School of Astrology’s Certificate in 2006, since when he developed his knowledge of traditional astrology through reading, home study, and experience. He is currently a herbal medicine clinical training supervisor at Middlesex University, and practices herbalism and medical astrology from Neal’s Yard remedies’ Therapy Rooms in Covent Garden. Marcos is conducting research on chocolate in sickle cell anemia, while writing his first book on the pharmaceutical history and usage of cacao.