I have never been a fan of the conventional, especially when I consider how the powers-that-be can influence/determine conventional thought. I've previously made my points about big agribusiness, pharmaceutical companies, etc, so some of you may know what I am referring to.
Anyway, unconventional thinking and concepts, although intriguing, are not enough to draw me in - there are a lot of kooks and pretenders out there - so the ideas must have some sort of scientific backing and they must actually make sense when you really look deeply into them.
Here is one of those rare gems! The following is from Mark Sisson's site. He has a ton of interesting information on his blog! Here are 2 of his posts with additional links that I feel lay the foundation for the plan. ENJOY!
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The Context of Calories
200 Calories is 200 Calories. Right?
“What’s that in the road ahead?”
vs.
“What’s that in the road!? A head!?”
Context is important.
Many people think weight loss is simply about cutting calories. But context counts here, too. Calories do have context and that’s what I want to explore today. Is a calorie from fat the same as a calorie from protein or carbohydrate? Depends on the context. Does day-to-day calorie monitoring make any difference if your week-to-week weight and energy expenditure are dialed in? Maybe not.
Most people (even many scientists) believe that the body composition challenge is a relatively simple equation: to lose weight you must reduce calories (either eat less or burn more), to gain weight you must add calories, and to maintain weight you keep calories constant. Calories in over calories out.
The truth is, it’s more like a complex equation where you have to factor in many other very important variables: Do I want to lose weight or just body fat? Do I want to gain weight or just muscle? How much muscle do I want to put on and how fast? What is my personal genetic “range” or limit for body fat or muscle? These are all different contexts. And these are further affected by supply (types and quantity of foods as well as frequency of meals) and metabolic demand (your relative immediate need for either energy, repair, or building). In the short-term, they are rate-limited by hormones (insulin, glucagon, epinephrine, nor-epinephrine, cortisol etc). And in the long-term the range (or limits) of possible outcomes is determined by gene expression (5’8” ectomorphs simply can’t become 275-lb body-builders, but they can be well-proportioned 165-lb men or 135-lb women.). The context can also change day-to-day. That’s where you come in as the director.
Fat burning, glucose burning, ketone burning, glycogen storage, fat storage, gluconeogenesis, and protein turnover. All of these energy-related processes are going on simultaneously in each of us at all times. But the rate at which each of these processes happens is different in each of us and they can increase or decrease (sometimes dramatically) depending on the context of our present circumstances and our long term goals. All of these contexts utilize the same gene-based principles of energy metabolism – the biochemical machinery that we all share - but because they all involve different starting points as well as different goals or possible outcomes, they often require different action plans. We can alter the rate at which each of these metabolic processes happens simply by changing what and when we eat. We can change the context.
The RD’s will tell you that protein has four calories per gram, so when you figure your daily intake, budget calories accordingly. But protein is used by the body mostly for maintaining structure and function. Yes, it can be burned as fuel, but really only as a secondary source, and even then, it must be converted to glucose to be utilized. So, depending on the need within the body, the first 10, 20 or 30 grams of protein might go towards repair and growth – not energy. Do we therefore discount those first 30 grams when we “count calories?” Depends on the context. If you don’t exercise much and eat frequently and copiously all the time, maybe most of the protein you eat will count more towards your calorie budget (since your structural protein turnover is relatively less). On the other hand, if you run yourself ragged, are under a great deal of stress (lots of catabolic hormones) and generally don’t get much protein, maybe most of that one high-protein meal goes toward repair and won’t be called upon as fuel for days or weeks. Or maybe you’re coming off an IF day. Does it really count as calories today if it isn’t burned or stored as fat? If those protein calories today go to adding lean mass (muscle) that is retained for years, do those calories count today? Then again, as muscle it does offer a potential long-term stored source of energy when gluconeogenesis is increased. See what I mean? Depends on the context.
Fats aren’t just for fuel either. They can be integral parts of all cell membranes and hormones and can serve as critical protective cushioning for delicate organs. At what point do the fats we consume stop becoming structural and start becoming calorically dense fuel? Depends again on the context. If there’s a ton of carbohydrates accompanying the fat on a daily basis, it’s pretty certain that that fat will be stored as adipose tissue sooner rather than later. That’s nine calories per gram in the tank for future use (if ever). And that’s what adds up over time when you weigh yourself. OTOH, if you’ve withheld carbs for a few days and your insulin remains low, the fats from this meal might be used quickly to provide fuel for normal resting metabolic processes.
Keep your carbs low enough long enough and you get into ketosis, a fat-burning state that creates what many now refer to as the “metabolic advantage.” In this context, fats are fueling most of the body’s energy demands either directly as fatty acids or as the fat-metabolism byproducts called ketones. To the delight of those looking to burn off unwanted fat, it gets better. The body balances the acidic effect of any excess ketones by either excreting them in the urine (in today’s $5 a gallon economy, isn’t that wasting fuel?) and by using ketones and fatty acids to create a bit more glucose for the brain via gluconeogenesis in a fairly “energy inefficient” process.
Finally, let’s look at the lowly carbohydrate and its four calories per gram. All carbs are broken down into simple sugars, and eventually (and almost always) into glucose. The primary use of glucose from all carbohydrate food is as fuel, whether burned immediately as it passes by different organs and muscles or whether stored for later use. The brain, red blood cells, and nerve cells prefer glucose as primary fuel (but don’t absolutely require it – they can use ketones). Muscles that are working hard will prefer glucose if it is available, but don’t absolutely require it unless they are working very hard for very long. If it is not burned immediately as fuel, excess glucose will be first stored as glycogen in muscle and liver cells and then, if or when these glycogen storage depots are full, it will be converted to fatty acids and stored in fat cells as fat. The things to remember about carbs and to put into context: Carbs are not used as structural components in the body – they are used only as a form of fuel; glucose in the bloodstream is toxic to humans UNLESS it is being burned immediately as fuel. (For reference, “normal” blood sugar represents only about one teaspoon of glucose dissolved in the entire blood pool in your body). That’s why insulin is so critical to taking it out of the bloodstream and putting it somewhere FAST, like muscle cells or fat cells. Moreover, humans can exist quite easily without ever eating carbs, since the body has several mechanisms for generating glucose from the fat and proteins consumed, as well as from proteins stripped from muscle tissue. For all these reasons, in the PB-style of eating, carbs are lowest priority. Unless your context includes lots of endurance activities (or storing fat) there’s little reason to overdo the carbs (USDA and RDs’ recommendations notwithstanding).
So what’s the take home message from all this? To be honest, I thought maybe you could tell me! Maybe it’s that by understanding how these metabolic processes work, and knowing that we can control the rates at which each one happens through our diet (and exercise) we needn’t agonize over the day-to-day calorie counting. As long as we are generally eating a PB-style plan and providing the right context, our bodies will ease into a healthy, fit, long-lived comfort zone rather effortlessly.
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The Definitive Guide to the Primal Eating Plan
In my recent
Context of Calories post, I explained how the different macronutrients we eat at each meal (fats, proteins, and carbohydrates) have different effects in the body. I suggested that, despite their raw calorie values, it’s far more important to get a lasting intuitive sense of how much of each macronutrient you need and when you need it (or not).
But how do you do that? How do you figure out the proper number of calories - and breakdown of fats, protein and carbs - to accomplish your fitness and health goals? To lose weight? Lose fat? Gain muscle? Maintain status quo? Run marathons?
In fact, most popular daily diets look at overall calories as the main factor in weight loss and weight gain. The age-old conservation of energy Conventional Wisdom says that “a calorie is a calorie.” From there most diet gurus generally prescribe some formulaic one-size-fits-all breakdown of fats, protein and carbs. A classically trained Registered Dietician will tell you that protein should be around 10-15% of calories, carbs should be 60% (and mostly from whole grains) and fat under 30%. This macronutrient breakdown stays the same regardless of how much weight you need to lose or what other goals you might have. Barry Sears has his 40/30/30 “Zone” diet. The USDA bases everything on a choice of between 2,000 and 2,500 calories a day. But, as I said earlier, it’s not that simple. Calories do have context.
The human body uses these macronutrients for a variety of different functions, some of which are structural and some of which are simply to provide energy - immediately or well into the future. Moreover, with regards to energy conservation or expenditure, the body acts as both an efficient fuel storage depot (and as a toxic “waist” site) as well as a potent generator of energy, depending largely on the hormonal signals it gets. It will store glycogen and/or fat and it will build muscle - or it will just as easily tear them all down and use them for fuel - based on input from you: what you eat, how much you eat, when you eat, what you’re doing before or after you eat - even what you’re thinking when you eat. Yet because your body always seeks to achieve homeostasis over time, the notion of you trying to zero in on a precise day-to-day or meal-to-meal eating plan is generally fruitless (yes, Charlotte, some fruit is allowed). The good news in all this is that falling off the wagon once or twice this week won’t have the immediate disastrous effect that you might imagine - as long as you can keep your average intake under control and understand how the various macronutrients function over time.
Which brings me to the crux of today’s discussion. Not only is it nearly impossible to accurately gauge your exact meal-to-meal calorie and macronutrient requirements, doing so will drive you crazy. In fact, to accurately figure your true structural and functional fuel needs (and hence to achieve your goals) it’s far more effective to look at a much larger span of time, like a few weeks, and aim for an “average” consumption. Then you can review that average daily intake over weeks or months and adjust accordingly. Below, I’ll give you a way to figure a “jumping off” point to start with, but remember, our genes are accustomed to the way our ancestors ate: intermittently, sporadically, sometimes in large quantities, and sometimes not at all for days. Their bodies figured out a way to maintain homeostasis and preserve lean tissue and good health through all this and so can we. Our genes want us to be lean and fit. It’s actually quite easy as long as we eat from the long list of Primal Blueprint healthy foods and try to avoid that other list of grain-laden, sugary, processed and otherwise unhealthy foods. Realistically, we also want to allow for the occasional party-splurge, a pre-planned (or accidental) intermittent fast, an over-the-top workout or even a week of laziness. Where most people get into trouble is in miscalculating their energy needs over extended periods of time - not day-to-day. They don’t see the average amount of carbs creeping upwards, or they figure they need x amount of calories, but don’t have a clue as to what kind of food those should be coming from.
I start with these four basic principles to guide my Primal Blueprint eating style:
1) 80% of your body composition will be determined by your diet. Yes, exercise is also important to health and to speed up fat-burning and muscle-building, but most of your results will come from how you eat. I’ll write more on this later, so just trust me on this one for now. Suffice to say, people who weigh a ton and exercise a ton, but eat a ton, still tend to weigh a ton. I think I’ll have that made into a t-shirt…
2) Lean Body Mass (LBM) is the key to life. I’ve said it many times on this site: lean mass (muscle and all the rest of you that is not fat) is directly correlated with longevity and excellent health. Rather than strive to “lose weight”, most people would be better off striving to lose only fat and to build or maintain muscle. Since other organs tend to function at a level that correlates to muscle mass, the more muscle you maintain throughout life, the more “organ reserve” you’ll have (i.e. the better the rest of you will work). Refer back to rule #1 and eat to build or maintain muscle.
3) Excess body fat is bad. Most human studies show that being significantly overweight increases your risk of nearly every disease (except osteoporosis - because ironically it responds to weight-bearing activities). Fat just doesn’t look that great either. See rule #1 and eat to keep body fat relatively low.
4) Excess insulin is bad. We’ve written about it here a lot. Chronic excess insulin may be even worse than excess sugar (and we know how bad that is). All animals produce insulin, but within any species, those that produce less insulin live longer than those who produce a lot. Eat to keep insulin low.
Here is how I use these principles to guide my individual macronutrient intake:
Protein
Protein takes priority. If there is ample glycogen (stored glucose) and the body is getting the rest of its energy efficiently from fats, protein will always go first towards repair or building cells or enzymes. In that context, it hardly seems fair to assign it a “burn rate” of 4 calories per gram. It’s like saying the 2×4 studs that support the walls of your house can burn nicely if you run out of firewood. They will, but I prefer to burn other fuel first. At a minimum you need .5 grams of protein per pound of lean mass/per day on average to maintain your “structure”. If you are moderately active you need .7 or .8, and if you are an active athlete you need as much as 1 gram of protein per pound of lean mass. That’s at a minimum, but it’s on a daily average. So a 155 lb moderately active woman who has 25% body fat (and thus) has 116 lb of lean body mass needs 93 grams of protein on average per day (116 x .8). If she gets 60 or 80 some days and 110 on others, she’ll still be in a healthy average range. And even if she exceeds the 110, it’s no problem if she’s eating low carb because the excess protein will convert to glucose, which will reduce her effective carbohydrate needs (see below). At 4 calories per gram, that’s between 320 and 440 calories per day in protein. It’s not that much.
Carbs
If you’ve forgotten everything you ever learned in biology, just remember this and “own” it: Carbohydrate drives insulin drives fat (Cahill 1965, and Taubes 2007). The idea in the PB is to limit your carbs to only those you need to provide glucose for the brain and for some reasonable amount (certainly less than an hour) of occasional anaerobic exercise. And the truth is, you don’t even need glucose to fuel the brain. Ketones from a very-low carb diet work extremely efficiently at that task. Either way, ideally, we would like most of our daily energy to come from dietary or stored fats. Typically, (if you are at an ideal body composition now) I use a rule of thumb that 100-150 grams of carbohydrate per day is plenty to keep you out of ketosis (and ketosis is NOT a bad thing) but away from storing the excess as fat if you are the least bit active. Don’t forget that your body can make up to 200 grams of glycogen from fats and protein every day, too. On the other hand, if you are looking to lose body fat, keeping carbs to under 80 grams per day will help immensely in lowering insulin and taking fat out of storage. On the other other hand, if you are insistent on training hard for long periods of time, you would add more carbs (say, 100 per day extra for every extra hour you train hard). It becomes a matter of doing the math and experimenting with the results.
Ironically, it’s tough to exceed 100 grams of carbs even if you eat tons of colorful vegetables - as long as you eat like our ancestors and consume no grains, no sugars and few starchy vegetables (potatoes, yams, beets, legumes, etc). Even if you eat a ton of vegetables AND a fair amount of fruit, you’ll be hard pressed to exceed 150 grams of carbs on average per day. Our remote ancestors couldn’t average 150 grams of carbs a day if they tried, yet they had plenty of energy and maintained their lean mass. At 4 calories per gram that’s only between 400 and 600 calories per day. Add that in to the protein above and our sample girl is barely at 1,000 calories on the high end. So where does the rest of the fuel come from?
Fats
Learn to love them. They are the fuel of choice and should become the balance of your Primal Blueprint diet. Fats have little or no impact on insulin and, as a result, promote the burning of both dietary and stored (adipose) fat as fuel. Think about this: if protein and carbs stay fairly constant (and carbs stay under 150), you can use fat as the major energy variable in your diet. Feeling like you need more fuel (and you’ve already covered your bases with protein and carbs)? Reach for something with fat. Nuts, avocados, coconut, eggs, butter, olive oil, fish, chicken, lamb, beef, the list is a long one. 100 grams of fats per day would only add 900 calories to our girl’s daily average, putting her at between 1620 and 1940 calories a day. Even if she averages somewhere between 1400 and 2200 calories per day over a few weeks, as long as she pays attention to protein and carbs, her body composition will shift to lower body fat and more desirable lean mass. If she decides to do some walking, a few brief intense weight sessions and a sprint day here and there, that process would accelerate greatly. If she gets to a point where she’s content with her body fat, she can even add in a little more fat to provide energy that she previously got from her stored fat.
The main thing I’ve figured out from eating this way for years is that I don’t need nearly as many calories to maintain health, mass, and body fat as I once thought I did - or as the Conventional Wisdom says I do. I eat 600-1000 calories per day less than when I ate a carbohydrate-based diet, yet I maintain slightly lower body fat and slightly higher muscle mass on even less training. Remember: 80% of body composition is determined by diet. The best part is that I don’t ever feel hungry because I base my eating on exactly what my 10,000-year-old genes want me to eat.
Further Reading:
The Primal BlueprintThe Primal Blueprint Carbohydrate CurveThe Definitive Guide to GrainsThe Definitive Guide to FatsThe Definitive Guide to CholesterolThe Definitive Guide to Insulin, Blood Sugar and Type 2 Diabetes The Definitive Guide to Stress, Cortisol and the Adrenals---
I highly recommend checking out these links and the rest his blog for that matter - Excellent reading material!
