im 28, 6'11. 270. i have to exercise 4 times a week and eat the right foods to maintain and add 2 work outs and less food to lose weight. My family has a history of obesity which includes a 6'4 brother who must weigh close to 330lbs, and im sure if i didnt do these simple things i would blow up. By no means saying i know more about heart surgery than a heart surgeon, but how do you know i dont know more about diet, metabolism and thyroid problems? Metabolism does slow down, as do thyroid problems which can and do play its part in obeisity. Yes there are recorded cases of people dying from starvation by eating too few calories and their body eats its own organs and muscle tissue, this happens in EXTREME cases and usually from a side issue such as a disease and again this generally happens in societies that are far less educated and health concious. But read any medical journal about caloric intake vs exercise vs weight loss, and the fact remains. Burn more calories than intake = weight loss (this starts with fatty deposits generally more than a week old and then moves onto muscles once fat is near gone).
You can say what you want to me thats fine and assume i know less than you or a heart surgeon because you are older and wiser or more educated. Fact is not only do i have a degree in health science and a masters in exercise science and currently a teacher studying my Ph.D in exercise physiology but i have spent 12 years of my life playing basketball both in college and then proffessionally. So maybe just maybe i do know a bit about this field. Think what you want about my opinions and statements but the opinion i have is formed through study and personal experience. Of course you can choose not to believe all that about me but again it makes no difference, truth is the truth no matter what you believe.
yes every person is different and so are their blood types and genetic make ups, but to blame being overweight on genetics is a cop out and without knowing the true % id go as far as saying 95% of people use this as an excuse.
And FYI
Fact.....Weight is far more complex than your simple scenario. If it were that easy, there would be far less obesity. the last part of this statement is not quite spot on, as i am sure you will agree a vast majority of people throughout the world are overweight due to lifestyle, poor education and lazyiness not because they are trying their ass off to get fitter. As far as talking health of course skinny doesnt mean healthier, im talking choloric intake and weight loss not heart disease diabeties or cholesterol problems.
I looked at the book link you put in and a serious question, is it a diet book or a book explaining the link between blood tyoe and weight loss? also feel free to check out
http://www.sportsscientists.com/
http://www.weight-loss-i.com/weight-loss-research/index.htm
there are a plenty of actual empirical research articles on choloric intake vs weight loss and diet vs weight loss from sources throughout the world, they cant all be wrong is what i guess im pointing out.