What Causes NO weight loss when in a deficit???

There is only one thing that could cause NO weight loss while in a
calorie deficit, and is not actually being in a calorie deficit.

That's a little overly simplistic and not at all helpful. Do you actually have a helpful suggestion that may indicate why she's not at a deficit?

Sleep apnea can cause weight gain, which exacerbates the sleep apnea, which creates a self-feeding cycle.

#6 metabolic shutdown due to too much of a deficit for too long. If you're interested, YouTube Biolayne metabolic shutdown

I've been eating 1700cal since February and since eff all for progress, I even took a 1.5 week break from logging and eat whatever in April... then continued with 1700cal. (some days going over - definalely 2 days for sure) then June 1st Ive decided to cut to 1500cals and cutting out bread, pasta and rice. (i was always having wholegrain, but still). so im onto day 3 with under 100gram carbs a day and its okay but i really have to plan meals ahead to stick with this plan.

for your situation that sounds like a good plan.

Take pics/measurements

And when people drop carbs they will lose a lot of water weight (short term).

You may find this useful.
http://cdnutritionandfitness.com/dont-rely-on-the-random-number-generator/

There is only one thing that could cause NO weight loss while in a
calorie deficit, and is not actually being in a calorie deficit.

This is completely incorrect and uneducated. I've had several hormone issues that even with diet and exercise AND EATING A DEFICIT, I was unable to lose weight.

Issues that will effect weightloss

Hypothyroidism
PCOS
Cushings Disease

You are talking about medical conditions there though. I think the poster that wrote the quoted bit, meant when there were no medical conditions present.

i'm sure there's any number of medical conditions that may make weightloss more difficult and/or complicated.

i'm quite certain there is no medical condtion out there thats going to magically force your body to retain mass if your flat out not eating.

there should be some happy medium for health weight loss in there somewhere.

There is only one thing that could cause NO weight loss while in a
calorie deficit, and is not actually being in a calorie deficit.

Worst advice ever.
If you're not refeeding, do that first. Second... reverse diet and maintain hundreds more calories a day for a few weeks. Then, carb cycle and get at least 300g carbs every fourth day.

Leptin looks to be a major player in your problem.

Lmao

I was in a similar situation before where it was seemingly mathematically impossible for me not to lose weight. And yet, I wasn't.

As mentioned before, it could be that you're not actually in deficit. The stupid body is a tricky thing. If you stay at a consistently lower calorie intake for a long period of time, your body will just simply lower the basal metabolism rate to match the intake. Gotta love evolution. The way to beat that is to simply raise the metabolism. I say simply, but this involves building muscle, which isn't terribly easy. Add weights to your regimen, if you haven't already. I did, and my weight started plummeting.

Secondly, there are some new studies about prolonged deficit eating and mixing in days where you increase your intake to what your metabolism should be. So, for every 2 or 3 days you spend in deficit, spend a day at normal.

Another option that you might want to consider is splitting your meals across 6 to 7 times per day. Sure, ultimately, it's all a matter of calories in and calories out, but I've heard for years that eating every 2 hours will keep your metabolism stable and boosted.

Just some thoughts from a fellow dieter who has hit roadblocks in the past. Good luck!

Precisely... exactly what I alluded to above this post (except for stretching meal times out. meal frequency means nothing).

I don't have diabetes, but I am hypothyroid, and I can tell you that your doctor may say that your numbers are "in the right range" and you can still not be correcting that issue for you. I was on the low-side of the scale (at .5), and after doing a "second generation test" - my doctor said I was normal. But - I wasn't feeling good and I wasn't losing weight - the opposite, in fact. I read studies that show the so-called normal range that most labs/clinics use (.5 - 5.5) is actually too wide, and especially for women, the range should be more like 2-3, when measuring your TSH. Also - there's another test that can be done to see how effective the T3/T4 conversion is. And - it is really important to check your TSH, T3/T4 annually, or after major life events (like pregnancy). Our bodies change over time - what was good last year for controlling your thyroid may not be good this year. Other hormonal changes, stress (hormones in that), pregnancy, surgery, etc. - can all impact how your metabolism works --- or doesn't.

Once I got into the 2-3 range, my weight started dropping. Mind you, it isn't fast at all. But it is going in the right direction. And I have had to adjust my meds over the years - sometimes upping it, sometimes lowering it - all to keep it in the range that allows me to feel good and have more control over my metabolism (and weight loss).

The kicker to all of this: as women, *all* hormones in general will have a huge impact on our weight. I'm in menopause, and I can tell you that weight loss is infinitely more difficult now. It doesn't seem like you're in that same situation but your hormones are probably having a big impact with the diabetes and thyroid issues rolled into one.

I've had to be extra diligent about tracking my food during weight loss periods - and learn how to eat correctly to maintain. That's because "free food" that I used to ignore is no longer free. C'est la vie.

I'd say - go back and talk to your doctor about what is happening (or what isn't) and ask to explore other options of why you aren't losing. Be certain that it isn't your thyroid or diabetes (or some other medical reason).

Good luck!