Adding a note of thanks rather than an opinion. I did not know most of that.
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Wellbeing · Sleep · continued
Sleep tracking data and its considerable limitations posts 31–60
This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1 · go to the accepted answer.
Sleep quality changes reported here have several plausible contributors, and separating drug effects from weight change, from schedule change, and from anxiety is genuinely difficult.
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The arithmetic in post #32 is right; the assumption feeding it is the part to check.
Fatigue during the day and poor sleep at night are different problems with different causes and get merged in most accounts here.
That matches what I was told, which is not the same as knowing it.
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plateau_notes, post #6: Agreed on all of that, and I have nothing to add to it. Go to post
Answering the question post #32 raises rather than the one it answers.
Sleep quality versus quantity: some people report changes to sleep duration; others report changes to sleep quality without duration change. Both can matter for recovery and daytime function.
Not the whole picture, but the part of it I can speak to.
Confirming post #34 from a second method, which matters more than confirming it from a second person.
Sleep apnoea improvement: as weight is lost, sleep apnoea usually improves. The timeframe is weeks to months, not immediate. Improvement often is gradual rather than sudden.
Noting that I have skin in this question and have tried to discount for it.
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k.brandl_de, post #2: Building on the opening post rather than restating it. Appetite suppression and nighttime eating: if nighttime eating was a pattern, appetite suppression changes that pattern. Sleep can worsen if nighttime waking is habitual and now there is no appetite-based reason to wake. Go to post
Post #36 describes the usual case. This is about the unusual one.
A referral for a proper sleep study answers in one night what months of forum discussion cannot.
Adding the caveat now so it does not have to be extracted later.
i.wojcik, post #27: On post #23 — agreed on the reasoning, with one qualification. Stimulants and sleep: if supplementing with caffeine or other stimulants for energy during weight loss, timing and dose matter for sleep. Evening stimulant use interferes with sleep. Small point, but it is the one that usually catches people. Go to post
Sleep hygiene: basics (cool dark room, consistent sleep time, no screens before bed) matter more during energy deficit because stress and sleep need are higher.
This is the version I would want a new member to read first.
Coming back to post #36, because the follow-up matters more than the original answer.
A sleep diary with times rather than impressions is the only way to tell a real change from a remembered one, and it takes a minute a day.
That is where I would start, not where I would stop.
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Consistency of timing does more for most people's sleep than any intervention discussed in this subcategory.
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k.brandl_de, post #2: Building on the opening post rather than restating it. Appetite suppression and nighttime eating: if nighttime eating was a pattern, appetite suppression changes that pattern. Sleep can worsen if nighttime waking is habitual and now there is no appetite-based reason to wake. Go to post
Consumer sleep trackers measure movement and heart rate and infer stages. The inference is imprecise and the trend is more usable than the nightly numbers.
Collapsed as off-topic by two members at trust level 3 or above
Helpful, and easy to find again, which is half of what a good reply is.
Building on post #41 rather than restating it.
Appetite suppression and nighttime eating: if nighttime eating was a pattern, appetite suppression changes that pattern. Sleep can worsen if nighttime waking is habitual and now there is no appetite-based reason to wake.
If that is already documented somewhere, ignore me and link it.
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Post #41 describes the usual case. This is about the unusual one.
What I can speak to on sleep is narrow, so I will keep it narrow rather than generalising from it. Beyond that boundary I do not know.
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a.wikstrom, post #42: Consumer sleep trackers measure movement and heart rate and infer stages. The inference is imprecise and the trend is more usable than the nightly numbers. Go to post
Eating patterns shift substantially and late intake affects sleep independently of anything pharmacological.
Stimulants and sleep: if supplementing with caffeine or other stimulants for energy during weight loss, timing and dose matter for sleep. Evening stimulant use interferes with sleep.
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Obstructive sleep apnoea: pre-existing OSA can worsen with weight before it improves (apnoea-hypopnoea index goes up as soft tissue inflames before weight is lost). This is self-limited but uncomfortable during active weight loss.
Genuinely open to being wrong about this one.
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a.teixeira, post #3: Fatigue during the day and poor sleep at night are different problems with different causes and get merged in most accounts here. Go to post
On post #45 — agreed on the reasoning, with one qualification.
The published data on sleep outcomes in this class is thinner than the volume of discussion, which is worth saying plainly.
Nothing above should be read as advice about what anyone else should do.
Apnoea monitoring: if you have diagnosed or suspected sleep apnoea, periodic monitoring (annually) during weight loss is prudent because severity changes.
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plateau_notes, post #6: Agreed on all of that, and I have nothing to add to it. Go to post
Taking post #52 at face value and following it one step further.
When sleep problems need attention: if sleep does not improve as weight loss continues or if it worsens, discussing with a clinician is prudent. Sleep disorders are real and treatable.
That holds for the case as described. Change the assumptions and it may not.
Collapsed as off-topic by two members at trust level 3 or above
Post #50 and I disagree about the size of the effect, not about the direction.
Two sentences on sleep and then I will stop, because the rest is speculation and the thread is better without mine.
What is documented is narrow. What is inferred from it is broad. The gap between them is where every argument here lives.
Everything in post #55 holds. The case it does not cover is the one I have.
Gastrointestinal effects overnight: nausea or reflux or constipation at night can disrupt sleep. Dosing timing (morning versus evening) might help if nighttime GI symptoms are the problem.
The mechanism is plausible, which is not the same as established.
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b.frisk, post #25: Sleep quality versus quantity: some people report changes to sleep duration; others report changes to sleep quality without duration change. Both can matter for recovery and daytime function. Go to post
No disagreement from me. Posting only so the question does not look ignored.
Answering the question post #59 raises rather than the one it answers.
Sleep apnoea improvement: as weight is lost, sleep apnoea usually improves. The timeframe is weeks to months, not immediate. Improvement often is gradual rather than sudden.
I looked this up rather than remembered it, which is the right order.
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