It’s sad but true that alcohol is fattening | Letters

Booze and biology | Troubled families | Spectators braving the rain | London finance | Defunct A-levelsColin Purdom (Letters, 18 October) is mistaken in asserting that alcohol is not fattening. As any A-level biology student should be able to tell you, it is converted by the liver enzyme alcohol dehydrogenase to acetaldehyde, then by aldehyde dehydrogenase to acetic acid. This then enters the breathtakingly complex Krebs cycle to be further broken down to water, carbon dioxide and ATP, which is