Even if a fitness tracker is 100% accurate, it’s data is meaningless

So fitness trackers are largely inaccurate when calculating calories burnt. Sadly, those who invested in this useless gimmick were not aware that calories don’t count anyway. The tracker developers also  seem blind to basic facts of human physiology. The article throws in even the learned advice of a cardiologist, yet he should know that however many calories you burn, exercise neither slows nor stops artery calcification. Many people wrongly assume their arteries are somehow kept clean by a daily regimen of a thousand steps. They should take note of the death by blocked arteries of a 28-year-old competitive marathon runner of in Hawaii in 1979. His arteries may well have begun calcifying in infancy due to the high sugar/carbohydrate content of baby formulas and foods. Such calcification has showed up on autopsies of 3-year-olds. Sugar affects all three main artery calcification causes. It lowers B vitamins needed to lower homocysteine, inactivates Vitamin C needed to stop artery inflammation, and raises blood triglycerides. 
The faulty calories (and cholesterol) theories were exposed in the early 1970s by Drs Robert Atkins and Richard Passwater and the authors of “Human Physiology” – the textbook for medical universities worldwide. From them we learned that it’s the carbs that fatten, not fats, so calorie counting and tracker calorie-burning is meaningless. Digested carbs first top up muscle and liver glycogen (stored sugar). The rest is rapidly converted to body fat in the cells’ mitochondria via the Krebs cycle. Digested fat only slowly converts to usable energy molecules in the liver. Fructose converts directly to body-fat in the liver, while popular addictive HFCS (high-fructose corn syrup) massively accelerates this pathway. The pathways to obesity of monosodium glutamate and Aspartame have been identified! The old wisdom of counting calories in versus calories out has long been exposed as fake (see “Human Physiology”, Chapter 5: Cellular and Energy Metabolisms).
There also exist various homeostasis mechanisms that prove calorie counting is meaningless for weight loss. These mechanisms speed or slow metabolic rate, MR, depending on what, when and how much is eaten. One such mechanism, the thermogenic effect, is bone-structure dependent. A light-boned ectomorph can quaff down four litres of heavily sugared ice-cream, say 10,000 calories,  and yet next day they will weigh exactly the  same. Ectomorphs have an inherent rapid MR rate rise after such a meal. A heavy-boned endomorph gains fat on a slice of apple pie with their very low inherent MR rise. (“Human Physiology” Ch 7: Homeostasis Mechanisms).
The intensity of exercise has different effects on metabolic rate and fat burn. Continuous vigorous exercise speeds metabolic rate 15 times. Eighteen minutes of sprint interval training three times a week keeps fat burn going for up to a couple of days due to the massive release of human growth hormone, (400 per cent). 
Eating a controlled calorie diet translates to a low-fat diet. This creates three problems. Low-fat meals speed stomach emptying by 100 per cent, as fats need longer to digest. That leaves the dieter hungry soon after a meal. They then eat more fattening carbs, so artery-protective nutrients in all high fat foods are lost, resulting in accelerated heart disease and stroke. Meanwhile a very low fat diet causes unused fat-digesting bile salts to crystallise in the gallbladder and form ‘”stones”. Every year 600,000 people in the US have their gall bladders removed, leaving them unable to digest vitamins A, D and E and fats.
Why does the mainstream persist with these outdated theories? Is it because they can’t admit to being wrong, or is it to fuel the US$3.5-trillion US sickness industry and the even bigger food and tracker industries?
Thomas Turk
Phuket