Complex sentence: When asked for the reasons for taking drugs, he variously pleaded ill health, insomnia and, later, the untimely death of his wife and, much later, accidental addiction while ill with malaria in Mozambique.
Split into simpler sentences: When asked for the reasons for taking drugs, he variously pleaded ill health, insomnia and, later, the untimely death of his wife. Much later, he blamed accidental addiction while ill with malaria in Mozambique.