“…If, however, degenerative disease was perceived as having a variable cause then its predetermined status was at once undermined. So while diseases such as hypertension, myocardial degeneration and arteriosclerosis might be labelled as ‘of unknown origin and of the chronic degenerative type’ (Langstroth : 1607), the observation that there were variations in the resilience of individuals to these afflictions that might be due to, say, living habits (Ferguson ) marked the appearance of a crack in the edifice of natural ageing. Diet, for example, might be able to ‘prevent and alleviate much of the so‐called degenerative disease’ (Sherman : 1426).…”