Carbo-Unloading. Is it a Good Idea?

There has been great enthusiasm, in some quarters, for low carbohydrate diets as a method of staying slim and fit. A recent American questionnaire-based study has, however, suggested that people adopting such diets (especially when they replace carbohydrates by fatty meat and dairy products) show (even when corrected for other risk factors, such as smoking) a reduction in their life span (https://www.bbc.co.uk/news/health-45195474). Diets with too much carbohydrate, however, also reduced longevity. This really underlines the point that what you really need is a balanced diet with about half your calories coming from healthy carbohydrates (although nuts appear to be good options).