I have one question though. I think I’ve read most of your site at this stage and I think I can find most of the answer to my question but I can’t seem to find the complete answer and it would be nice to see it pulled together in one place. Now I understand the whole calorie deficit thing & I understand that you can create the deficit through diet & exercise. I also saw your article saying that, although weight training does have *some* effect on weight loss, its actually very small. I’ve also seen you virtually dismiss (:-)) cardio. The thing is, I haven’t seen all these things drawn together in one place. So: are you saying that changes to diet has BY FAR the greatest effect on fat loss? And that weight training and cardio have such a small effect on fat loss that, relative to diet, they are almost insignificant? Because that is the impression I’m getting. Actually – and I know this is not really possible – could you quantify their relative effects as you see them? e.g. diet 70%, cardio 20% weight training 10%. Again, I know, that’s not possible, but just to give a “feel” for their relative impacts. You can see what I’m getting at here: I’d like to get an idea for where to concentrate my efforts.
Diets often do improve cholesterol, blood sugar and other health markers in the short term, but these gains may result from changes in behavior like exercising and eating more vegetables. Obese people who exercise, eat enough vegetables and don’t smoke are no more likely to die young than normal-weight people with the same habits. A 2013 meta-analysis (which combines the results of multiple studies) found that health improvements in dieters have no relationship to the amount of weight they lose.
Avoid fad diets. It's never a good idea to trade meals for shakes or to give up a food group in the hope that you'll lose weight — we all need a variety of foods to get the nutrients we need to stay healthy. Avoid diet pills (even the over-the-counter or herbal variety). They can be dangerous to your health; besides, there's no evidence that they help keep weight off over the long term.
Obviously, it’s still possible to lose weight on any diet – just eat fewer calories than you burn, right? The problem with this simplistic advice is that it ignores the elephant in the room: Hunger. Most people don’t like to “just eat less”, i.e. being hungry forever. That’s dieting for masochists. Sooner or later a normal person will give up and eat, hence the prevalence of “yo-yo dieting”.