The report is formal and insists on the necessity of a good balanced diet and the dangers of unconventional diets.
Nutrition expert, and in charge of a research team for 25 years, I entirely agree with these conclusions and can affirm that since 1987 in the service where I collaborate similar conclusions have been published.
Generally in Europe the problem with weight is principally perceived as an aesthetic problem. It is not taken seriously: one follows the latest fashionable diet, one sometimes loses weight, one regains always the weight, and one restarts again next year. It's there that lies the danger.
For 50 years now the unbalanced diets have made you lose the pounds and then regain up to 40% of what you have lost. Lose 11 pounds and you regain 1 stone; lose 1½ stones and you regain 2 stones.
How can this phenomenon be explained? Why can't we lose several pounds, stop the diet, remain stable, restart later, continue to lose the pounds, etc. Unfortunately it doesn't work like that.
One returns systematically to the start in an infernal spiral and the supplementary pounds accumulate leading to major weight gain and obesity.