After a lifetime of failed dieting, at 65 I lost a stone in a 3 weeks and another 4 stone in months following this easy rule. Three years later - here's how I've kept it off

A 65-year-old individual lost a significant amount of weight in a short period and managed to keep it off for three years by following a simple rule. The weight loss consisted of one stone in three weeks and an additional four stones in the following months. This achievement is notable given the person's history of failed dieting attempts.