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+--- Thread: Correlation to Keto- AHI has skyrocketed (/Thread-Correlation-to-Keto-AHI-has-skyrocketed)
RE: Correlation to Keto- AHI has skyrocketed - Geer1 - 01-22-2022
The odd central apnea (AHI under 1) is normal and a number of them may not even be real/occurring while asleep as it is common to hold your breath while changing sleep position etc and the machine flags these events as apnea.
I would say pick a PS (2.5 or 3) and then no more changes while we wait to see if/how breathing stabilizes now that you are off keto. Nothing in this data currently causes alarm to warrant setting changes unless something gets obviously worse like it was before.
Reason I was curious about your size is that you have high ventilation numbers but you are a bigger guy so that makes sense. Did you lose any significant amounts of weight or notice reduced bloating, reflux or anything else while on keto that you think might have affected airway restrictions?
RE: Correlation to Keto- AHI has skyrocketed - robtheironguy - 01-22-2022
Weight wise I was 317 Jan 3rd and dropped to 300 by last weekend. Felt great during keto and no bloating as I, for the most part, was also fasting, so slightly hungry.
Thanks for the reassurance. Will report back in a week unless I see any significant events.
Really appreciate this forum and made my donation!
I will ease into some intermittent fasting next week as I cross referenced, without keto and just doing 16-20 hr intermittent fasting historically didn’t impact the AHI on my prior settings
RE: Correlation to Keto- AHI has skyrocketed - Geer1 - 01-22-2022
Especially if that 17 lbs came off abdominal area and if there was also a reduction in bloating etc I could see the rapid weight loss easing respiration. Our bodies don't adjust immediately to such things (it can take weeks/months for some people to adapt to CPAP and get out of similar treatment emergent central apnea) and my guess is that your body is just stuck playing catch up to the rapid weight loss and easier breathing.
Instead of rapid weight loss that is often followed by gaining it back again due to inability to sustain the diet I would focus on trying to find a comfortable diet that you believe you can maintain indefinitely (with the odd cheat meal). One that will allow slower but progressive weight loss while you apply exercise effort etc and that will allow you to maintain the weight with minimal exercise (or maybe I should say average exercise). I don't know your particular situations and how difficult that might be but it is what I personally would shoot for, I personally wasn't able to keep my weight under control until I revamped diet in a similar way myself. Over the past 1.5 years I have been able to keep body weight in 170-190 range even during periods of inactivity (like last 2 months recovering from neck fracture) compared to previous high of 220 (I am a smaller guy at 5'9").
RE: Correlation to Keto- AHI has skyrocketed - robtheironguy - 01-22-2022
That is good to know, didn't' realize, but it makes sense that body shape will impact the CPAP efficacy. Definitely trying to do more sustainable approach but was trying to get a headstart for cycling this summer. Knocking off beer has certainly helped.
RE: Correlation to Keto- AHI has skyrocketed - Geer1 - 01-22-2022
I was in the 200+ weight range when I got diagnosed with apnea. Last year I had two in clinic sleep studies and both showed that apnea was no longer an issue. I believe it was a combination of weight loss and less nasal congestion, reflux, bloating etc from improving gut health with the diet changes.
Edit: I still use CPAP and find I sleep better with it but I believe mostly due to the extra humidity it provides.
RE: Correlation to Keto- AHI has skyrocketed - robtheironguy - 01-22-2022
Fantastic- maybe that is in the cards for me if I get down there.
Well done
RE: Correlation to Keto- AHI has skyrocketed - hegel - 01-22-2022
(01-19-2022, 12:32 PM)Crimson Nape Wrote: The 5lbs is water weight. Dehydration can have some strange effects on the body. Keto or fasting, you should hydrate. This will reduce hunger symptoms as well. Being on one of these diets and added hydration can cause your potassium level to drop. This will cause cramps, usually in the legs.
This. And it also is a far likelier explanation for your afib. Both dehydratrion and electrolyte depletion can bring on afib. Unfortunately I know fair bit about this through sad experience. I do frequent Stopafib web site and ahve for about a decade. I've NEVER heard of carbs or a lack of them bringing on afib. I HAVE frequently heard about dehydration and electrolyte depletion bringing on episodes.
I hope that you have a plan and a good Electrophysiologist for dealing with this, even if you're still just in wait and see mode. You want to be proactive and have meds on hand. Many cardios and GP's are way too dismissive of afib because it won'[t kill you (but the stroke that it causes might.)
I also wonder if rapid weight loss might be stressing your body in other ways. Best wishes and avoid afib episodes at all costs!
RE: Correlation to Keto- AHI has skyrocketed - robtheironguy - 01-22-2022
Appreciate it.
Didn't really dabble with Fasting or keto until recently. Had a few Afib episodes but once I went on to the CPAP it shut them down and never had one again until this year which was kicked off with bad heat stroke and then incrementally with the Keto. Even the fasting I did a few years ago, that did affect the AHI numbers in my initial post, did not kick off an episode.
But we have definitely solved a lot here
RE: Correlation to Keto- AHI has skyrocketed - robtheironguy - 01-22-2022
I did come across this and can't quite interpret if the effects of Keto/Fasting are in line with what this study noted, little beyond my pay grade, but it may actual be the opposite. My HbA levels would drop one would assume under Keto
HbA1c is associated with severity of obstructive sleep apnea hypopnea syndrome in nondiabetic men
The aim of this study was to examine the potential correlation of sleep characteristics with glucose metabolism in nondiabetic men with obstructive sleep apnea syndrome (OSAS). Included were 31 male patients (mean age 46.7 +/- 11 years), recently diagnosed with OSAS by full polysomnography. There was a significant correlation of fasting glucose and glycosylated hemoglobin (HbA(1c)) levels with arousal index (P = 0.047 and P = 0.014, respectively). Moreover, HbA(1c) levels were correlated with apnea hypopnea index (P = 0.009), a widely accepted marker of the severity of OSAS, and with percentage of sleep time with saturation of hemoglobin with oxygen as measured by pulse oximetry (SpO(2)) < 90% (t < 90%) ( P = 0.010). Finally, glucose and HbA(1c) levels showed a significant negative correlation with average SpO(2) (P = 0.013 and P = 0.012, respectively) and, additionally, glucose levels with minimum SpO(2) (P = 0.027) during sleep. In conclusion, severity of OSAS among nondiabetic men is associated with increased HbA(1c) levels and increased fasting glucose. Thus, severity of OSAS may be an additional marker of cardiovascular risk, as well as of future diabetes, in these subjects. However, further work is needed to confirm the clinical significance of these observations.
RE: Correlation to Keto- AHI has skyrocketed - Geer1 - 01-22-2022
Specific to your case no obstructive sleep apnea was present
. I looked at the study and a couple others and I believe the correlation points to a causation opposite of what you are wondering about. In other words it appears that sleep apnea can causes/worsen diabetes. I assume it does so in a similar way to AFIB (by affecting bodies hormones, neurotransmitters and overall body function).