I would also question the wisdom behind a lot of the advice on 'healthy' eating.
The NHS eatwell plate advises 1/3 of our daily intake.comes from carbs.
We all know that excess carbs are converted into glucose (sugar) in the body.
We know about insulin. That insulin is released in response to glucose in the body.
Insulin is the 'fat storing hormone'. You can't lose fat efficiently whilst there is insulin present in your body.
Insulin is responsible for hunger pangs. Sugar highs and lows aren't necessary. Cravings aren't necessary.
People who eat low carb/keto (and do it properly) don't experience cravings, sugar highs or crashes. They also find that the food noise disappears and appetite is regulated.
But people regard low carb as a 'fad diet' claiming they don't want to cut put any food group but see low fat as common sense.
It is advice based on old science that believed eating fat makes you fat when sugar is the problem.
But it's hard to do because everywhere you go sells food that is absolutely laden with carbs, hidden carbs. Etc. It's practically impossible to buy any prepared food that doesn't contain any sugar. Even most shop bought pate and smoked salmon contains sugar.
What we actually need is real, independent, unbiased, up to date research done into weight gain/loss and an overhaul of the diet industry and the food industry in general. No research that is funded by the food industry or medical industry. But that won't happen because there's too much money to be made from junk food, junk food that presents itself as healthy and pharmaceutical companies selling expensive medication.