Heston Blumenthal broke down in tears as he spoke about the toll his undiagnosed bipolar disorder took on his family during an emotional conversation with his son Jack.The 59-year-old chef, best known for his experimental cooking and TV shows Heston’s Fantastical Food and Heston’s Feasts, was diagnosed with bipolar disorder in November 2023. His new BBC documentary Heston: My Life With Bipolar, airing Thursday, explores how the condition affected both his personal life and mental health.Blumenthal recalled suffering hallucinations, manic episodes, and suicidal thoughts before being sectioned — a decision made by his wife, French entrepreneur Melanie Ceysson, whom he credits with saving his life.