I know Leeds Carnegie do a fair bit of work in this area,.especially with respect to children. Tom.van Rossum, once of this parish works in this field or at least used to. Iñigo San Millan is a leading expert in metabolism and talks a lot aboutetabolic health, not specifically about obesity but it comes up in his interviews. A lot of what he talks about isn’t just about calorie deficits but also the wider health benefits of aerobic exercise.
This is absolutly my experience when working as an osteopath. Some people seem happy to judge obese people as greedy, lazy and so on, generally attaching a lot of negativitty to it. But working with obese patients with whatever MSK problem they came in with it seemed to me that they over eat because emotions/thoughts related to a deep seated lack of self worth (which society reinforces), unhappiness, etc.
My response above was purely because @joex asked about exercise.
the psychological side is key as mentioned above, the nutrition course i did focussed a lot on habit changing and taking away negativity around foods (foods are not good and bad for instance) A lot of obesity is caused due to deep routed issues within a person, depression, serious physical injury, and then habits form around food which need changing rather than just eat less move more.
If I’m looking for studies online Google Scholar is my starting point usually. Then you still need to separate the wheat from the chaff, but it could throw up some nuggets for you.
Like most middle aged blokes, belly fat is a constant foe; it’s been years since I haven’t done sit ups every day, but those abs are slightly insulated! Trouble is, I’m not prepared to ‘starve’ myself for a Men’s Health cover
The CI part of it isn’t just the calories you put in your mouth. It’s also macros which changes the calories your body absorbs. See the video @Doka shared previously on caloric availability which compared protein to simple carbs.
There are hormones which control your hunger a satiety, ignoring those means that sticking to any calorie restriction is significantly harder.
the body also uses more energy to process certain macros. simple sugars go straight in to be used, protein for instance is moved to where its needed and when that’s done it is turned into energy with is pretty intensive in its energy requirements to do.
First hand experience of this, I changed my eating habits this year and the difference has been remarkable.
Three months ago I switched to a low carb diet, for the first two months I was on as close to zero carb as possible.
I went through some struggles with headaches and tiredness for the first ten days, but once that passed I have felt great, more energy, better sleep and critically never feeling hungry. This is despite limiting myself to 1500kcals per day plus 50% of exercise calories.
For the last month I have fed in slightly more carbs- roughly 50 grams a day, but to be honest I can take or leave this, it hasn’t made a vast difference.
Previously when I tried to lose weight by simple calorie restriction it hasn’t worked for me- hunger and cravings for carbs have beaten me.
This isn’t for everyone, I takes serious food commitment to tracking food, and serious willpower to not have a cheat day.