rdcrags wrote:carlson1 wrote:rdcrags wrote:carlson1 wrote:Me and my wife started September 1, 2015 with a new life. I have lost 49lbs
What is your story?
My story is this: I believe that when the weight goes down due to eating fewer calories, exerting more, or both, the bad numbers go down, the good numbers up. I plotted this for my case over a period of 3 years (6 blood analyses), and showed the plot to my doctor. He requested permission to show the plot to his non-believing patients. In other words, what was relevant 70 years ago is still valid, despite the yards of dietary shelf space at the book stores and online. That’s my story. Each to his own belief or understanding, though. Free country.
Dr Peter Attia MD (Stanford medical school and Johns Hopkins residence) is also an undergrad and graduate degrees in engineering. That gives him an advantage over the typical MD in that he actually had to know thermodynamics to get his engineering degrees. Nobody is disputing the energy conservation. But here's what Attia has to say about the whole calories in/out paradigm:
http://eatingacademy.com/nutrition/do-calories-matter
Basically, it goes like this: the equation X = kcal in - kcal out is descriptive (ie a mathematically correct description). It is not explanatory. It doesn't answer
Why questions. That is, the equation does not establish an "
arrow of causality."
So I'm going to apply this equation a number of different ways. Each one is mathematically identical.
G = growth
G = Calories in - Calories out.
You have a growing adolescent boy who is eating you out of house and home. Why? What's causing him to do so?
Is he growing because he's in eating more calories then his maintenance needs? Is the arrow of causality this way
G <= Calories in - Calories out?
Or
Is he eating more calories then his maintenance
because he's growing. Is the arrow of causality this way
G => Calories in - Calories out?
I can ask the same question of a pregnant woman: P = Calories in - Calories out. My daughter is pregnant. Where she used to eat like a bird, she now says she's now hungry all the time.
What's going on in the above two equation? Hormones are driving the hunger response and increasing appetite to insure a positive caloric balance.
F = bodyfat
People just assume the arrow of causality is this way: F <= Calories in - Calories out. Maybe that's not true.
Are you getting fat (<=)
because you are eating more calories then your maintenance?
Or
Are you eating more calories then your maintenance
because you are getting fat (=>)?
If it's this later then what [hormone] is driving fat accumulation and increasing appetite? Insulin.
To quote Attia's link, above:
"
What you eat (along with other factors, like your genetic makeup, of course)
impacts how your body partitions and stores fat. In case anyone is wondering how I got over 2,000 words into this post without mentioning the i-word, wonder no longer.
Insulin, while not the only factor involved in this process, is probably at the top of the list. When you eat foods that have the double whammy of increasing insulin levels AND increasing your cell’s
resistance to insulin, your body prioritizes fat storage over fat utilization.
Remember the great medical disconnect – no one disputes that insulin is the most singularly important hormone for causing
fat cells to accumulate fat. Somehow the dispute centers on what causes people (full of billions of fat cells) to accumulate fat.
All calories are not created equally: The energy content of food (calories) matters, but it is less important than the metabolic effect of food on our body."
Also from Attia's blog: The great medical disconnect
http://eatingacademy.com/nutrition/the- ... disconnect
"here is probably no greater disconnect in medicine than the root cause of obesity. Even if you think you already know the answer to this “obvious” question, it’s still worth reading on. The reason this question matters, of course, is clear to everyone. Obesity (and more broadly the syndrome we define as metabolic syndrome) predisposes us to virtually every disease afflicting us in the modern age. Above is a simple graphic from the journal Nature showing the linkage between obesity and all of its sequela.
When you are obese, your risk of disease goes up. This is not disputed. Here is where the controversy starts…what actually makes us obese?
Obesity is a disorder of fat accumulation – fat cells accumulate too much fat, relative to how much fat the body breaks down. Conventional wisdom, however, says obesity is a disorder of eating too much and/or exercising too little. These are not the same thing.
Let’s turn to a well-respected source of medical information, Lehninger’s Principles of Biochemistry (the so-called “bible” of biochemistry)......"