swimmer2 said:
To be blunt guys, how much of this stuff do you really know and how much is Google, because I want to make the right choices based on informed debate and experience.
Swimmer I would respectfully say that is the point in all of this. None of us are experts if you want expert then you need the medical proffesion. I can say 79% fat is fine, just look at mine or others "stats" for hBA1c and such like but others will tell you no way and try and persuade otherwise.
You have to view the argument in the context of who is arguing it as well. I will argue from the perspective of trying to get newly diagnosed diet only T2's to do LCHF because I think it works best for the vast majority of those newly diagnosed people or people such as yourself. Others are doing it from a T1 / T1.5 insulin using perspective etc so you need to take that into consideration as well.
Personally I try and base my arguments on logic rather than being a dietary expert as I recognise I'm not. I will give links to people opinions I'm sympathetic with or things I find of interest and yes will point out when I think someone is wrong.
When it comes down to it though the bottom line is if you fix the percentage of carbs in your diet "low" then sheer logic dictates you must have other percentages for fat and protein and all three have to add up to 100% or your complete diet.
The percentages are not the full story though, if only it were that easy!
Everyone needs a certain amount of energy (calories) intake per day to maintain their weight and the ability to actually function.
There are simple rules which apply to all dietary methods which is why diets become comparable. Those rules translate how grams of carbs, fat and protein convert to calories. For each gram of carbs you eat it counts as 4 calories, each gram of protein is also 4 calories and each gram of fat counts as 9 calories. That is what I base my logic on.
I don't know what your own calorific requirements are swimmer as they will depend on how much exercise and your current weight. As Phoenix and others like myself point out you can roughly calculate your requirements by using BMR or RMR. If I assume you are an average chap (sorry) then its likely to be around 2000 calories a day (some will say a bit more). Consequently if you fix your carbs to say 125 grams / day to keep your meter readings safe that will be giving you 500 (125 x 4) calories of your 2000 calorie requirement. You will therefore as an average man need to get 1500 calories from other sources. How you break down that extra requirement is up to you but it will either have to come from fat or protein. It can't come from thin air.
The simple fact that a) you wanted to fix the amount of carbs you eat and b) need to eat enough calories to function has at the moment and maybe unknowingly got you on a position of eating a 79% fat diet. If you want to reduce fat and up protein then simply research foods that are high protein and eat more of those while cutting back on fats. You can work how to change the ratios quite easily using the carbs / 100g, fat / 100g and protein / 100g figures you can find on the backs of things. My personal belief is eating a very high protein diet (much above 30%) is far worse than eating a very high fat diet.
Let's assume you agree with me and decide you want to aim for around 25% protein in your diet. Well 25% of your 2000 calorie a day required intake is again 500 calories or 125 grams based on the 1 gram of protein equals 4 calories rule. So you now have fixed two of your numbers in your diet. You are getting 500 calories from carbs by sticking to 125 g a day and now get another 500 from protein from the 125g of protein a day. So from carbs and protein you are now eating 1000 calories. As you need to eat 2000 calories the only way you can do that and maintain your weight and function is by eating 1000 calories of fat.
So now it comes down to choosing the kind of fat to make up that 1000 calories of fat. You could choose saturated or unsaturated fats etc. There is then an argument to be had whether one type of fat is better than another and those arguments get debated here too. Whatever fat you end up choosing you will need to be eating 1000 calories of them or 50% of your diet so on the example then overall regardless of what type of fats you decide are good or bad yo MUST end up as lchf as your ratios are 25% carbs, 25% protein and 50% fat.
So lets say that 50% "shocks" you and you decide to cut half the fat out of your diet but recognise eating too much protein is not good for you so try and keep that at the same 125 grams a day.
Well you can't eat more carbs because your readings as T2 will rise so effectively cutting fat in half in an attempt to lower your fat intake really just means you are eating 500 calories less per day. So you are now only consuming 1500 calories a day. However as we said our average man needs 2000 calories a day to maintain their weight and function so effectively you've just gone on a diet and will remain that way presumably until you reach a weight where your RMR says you will stop losing it. On 1500 calories a day a 5ft 6" man who is just over 50 year and doing minimal exercise a day would be predicted to end up around 7 stone before they stopped losing weight.
Saying that it does then effect your ratios as you are now getting 500 calories from each source so your ratios show 33% carbs, 33% protein and 33% fat. So yes you are no longer doing lchf but are on a permanent diet. When you see me write "the myth of a low carb, low fat, low protein diet" I mean it in that context. You can either believe I'm right or wrong again that is your choice.
My point is Swimmer I imparted that without stating a single food stuff as like yourself I don't claim special knowledge but I can choose LOGICALLY a ratio that is appearing from experiment (i.e my test results and what my GP says) to be working and some has evidence based research that I can read.
So really Swimmer there is no simple answer. You can't in most cases go see the NHS dietician as she will just tell you eat more carbs and take drugs and accept higher BG's. Other health services would tell you different things again. It is your choice.