Anyone heard of, or tried, this?

I hadn't heard of these specific numbers or anything but I know you can't go wrong limiting sugar and sodium! I wasn't sure what number I should be going for, as far as sugar but I had read to stay under 2,300 mg with sodium so that's what mine is set at (not that I have figured out how to stay under that yet but at least it's my goal every day!). But I welcome your suggestion and will try those numbers!

4-9lbs a month seems way more reasonable.

I said it in another thread, I'll say it in this. Women are crazy.

That's way too much to lose in a week -- its all water weight.

If you change your setting and up your protein, lower your carbs -- your sugar will go down by default.
My settings are currently 40% protein, 30% carb, 30% fat

Salt is the great evil in my opinion --- I lowered mine to 2100 and as soon as I get used to that, I'm going to try and get down to 1500 or less.

I am a diabetic. I went back to my food diary over the last several days and I am anywhere from 10-22 grams of sugar per day. I also try to limit my sodium to less than 2000/day. I truly believe that eating sugar makes you crave more sugar (no, not a scientific statement - just my opinion). If I really can keep it low over a days time, I really don't crave it. But losing that amount of weight tied to sugar intake, I don't think so. Truly calorie counting is what will work.

sounds pretty unrealistic!

Weight loss is simple math. Calories out must be more than calories in. Plain and simple. That's why people who eat nothing but chips or nothing but Subway sandwiches still lose weight. You can lose weight eating nothing BUT sugar if you eat less of it than energy you expend.

If your goal is to lose weight and be healthy, then yes, cutting out sugar and fat will certainly help you but it won't help you if you replace those quantities with other foods. Any diet that says you can and should lose 4-9 pounds a week is hogwash. People on the Biggest Loser lose less than that on some weeks and look what they have to go through to achieve that.

There was a nutritionist on Rachael Ray a few days ago who said you could lost 4-9lbs a week, by limiting your sugar to 15 grams a day. I'd LOVE to lost 4-9lbs a week! LOL

Jillian Michaels says to have no more than 1,500 of sodium a day, so I changed my settings to that also.

Has anyone heard of this or tried this?

a loss of 4-9 lbs a week would imply a caloric deficit of 14,000 - 31,500 cals a week or 2000cals - 4500cals. simply cutting sugar won't produce a loss like that

I don't really watch my sugar at all. But salt is a different story.
My doc told me 1800 mg sodium and at first it was impossible for me to do...I was more like 3500 - 3800.
Now I'm consistently between 1800 -2000, mostly by avoiding prepared foods as much as possible. I try to make fresh things like navy bean soup, pea soup, etc and I leave the salt out of the recipe. A crock pot full gives me 8 one cup servings that are pretty healthy. Some people can't eat the same stuff day after day but for me it makes it easier.
I usually do steel cut oats (Irish oats) for breakfast and at least half the time a homemade salad for lunch. Then with 600 - 800 cals left in my day I can kinda splurge at dinner.

I don't keep a close eye on sodium intake, but for the fun of it the other day I added up 8 days worth and the average was 1600. I'm ok with that.

Most of my 'excess' sugar is coming from fruit lately, so that's ok by me as well.

That's not necessarily true. Fat is NOT a preferred energy source, and the brain cannot use fat as energy. Ketones that the brain CAN use for energy are actually from protein. Which means you're losing a fair amount of muscle as well as fat. Using ketones to support brain function is basically a starvation survival mechanism, and isn't something that's meant for long term, brain function slows down when it doesn't get glucose for extended periods of time, as a way of coping with less fuel. Your body uses glycogen to fuel the muscles, glycogen is created from glucose and also from amino acids. Granted some body fat is glucose that's been converted to glycerine, but not all of it is.

Fat is an endocrine organ, your body requires fat for proper hormone balance and body regulation (hormones, body temperature, etc.) Saying that your body will burn fat just because you take away all of it's other fuel sources is no different than saying your body will burn one of your kidneys for fuel, it doesn't actually work that way.

Tiger, where did you read that ketones come from protein? They're synthesized from fatty acids. That's easy enough information to verify. You don't burn muscle on a ketogenic diet, in fact it's been shown in studies that you lose far less muscle on it than on diets containing carbs. Just ask any bodybuilder on it - and there are plenty. And you say fat is an endocrine organ that controls everything, which is true, but how does one lose weight if that fat is completely unusable? That's an absurd concept. That's like saying, oh, muscles won't get used if the body doesn't have enough energy.

There's nothing to prove that on a keto diet, the brain can't function as well. Babies, for instance, spend most of their time in ketosis - their entire diet is breastmilk, which certainly isn't bread, and they need the ketones to form their brain.

Check your science before bashing a diet, rather than just misinformation and hearsay.

I keep my sodium to around 1500mg/day due to high blood pressure. I seem to be sensitive to salt.