For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
13 likes 9mo
Wellbeing · Sleep · continued
Sleep tracking data and its considerable limitations posts 121–127
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.
n.vukovic, post #7: Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can actually address it. Both are the norm here and both matter more than they sound. Go to post
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.
p.novak, post #34: Coming back to post #32, because the follow-up matters more than the original answer. 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
Coming back to post #122, because the follow-up matters more than the original answer.
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.
post #124 is right about the mechanism and I think understates the practical bit.
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.
18 likes 9mo
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.
0 likes 9mo
m.vukovic, post #120: post #119 is right about the mechanism and I think understates the practical bit. Energy and sleep needs: rapid weight loss increases real metabolic stress. Sleep needs might increase even though appetite for food has decreased. Prioritising sleep is prudent during active weight loss. Go to post
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.
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