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Association of sleep duration in middle and old age with incidence of dementia

cnn.com

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Re: Association of sleep duration in middle and old age with incidence of dementia

#42
post #19

Earlier quoted context omitted.

That's just half of the picture. My kids are older but they have a talent to get up at 6 in the morning on weekends. And need to get up at similar times for school during the week.

If you have kids getting up at 6 for school and you haven't adjusted your sleep schedule to match, isn't that kind of on you now?

As a parent I need both my own down time and time alone with my spouse to feel mentally healthy too, and that is usually after they are in bed and asleep. Maybe more than 6 hours is easy, but it's usually less than 8 if I manage to do all my normal expected activities. Often I do sleep instead now though as I quickly realized my temperament is only agreeable with enough of it as I age, and the other things I need to do suffer. Others may not make the same choice, and it's not a wrong to prioritize other important aspects of mental and physical well being.

Re: Association of sleep duration in middle and old age with incidence of dementia

#43

So, anyone with kids is probably going to have dementia?

Not doubting anyone's personal experience, but to add another anecdotal data point: Kids weren't as disruptive to sleep as I expected after reading horror stories online. The way the internet talks about child raising sometimes makes it feel like martyrdom, but the internet tends to focus on worst-case stories and people venting about uniquely bad situations. It's almost taboo to share positive stories when other par…

I’m expecting my first child in June and have sort of been preparing for misery when it comes to sleep. I appreciate you sharing this.

Re: Association of sleep duration in middle and old age with incidence of dementia

#44
post #22
post #14

Earlier quoted context omitted.

Usually parents can't sleep well only for a year at most, even 6 months old children are sleeping whole nights.

You say that. I too believed as you did. I looked for the joyous day when I could sleep through the night with our first and second and third. But it turns out toddlers will get up in the night and ask you to tuck them back in, they will get up because they had a scary dream, because they can't find their stuffed animal, and don't get me started on night terrors. The point is I don't think this tracks. I don't think…

Night terrors are not remotely normal. They are a fairly uncommon and extreme sleep issue.

My experience/understanding: Very bright kids get night terrors when you make sure they are physically tired enough to sleep but fail to make sure they are mentally tired enough to sleep. You need both to sleep deeply and bright kids who can't yet read have trouble reaching a state of being adequately mentally tired.

I suggest you join some parenting lists for people suffering from having made the mistake if giving birth to bright kids. Tagfam.org is probably still a good place to begin trying to find support resources and reliable info.

Edit: Bright kids are known to be prone to a variety of sleep issues. I spent twelve years arranging every minute of every day to make sleep feasible for one of my kids.

Re: Association of sleep duration in middle and old age with incidence of dementia

#45
post #33

~6 hours or just above it in general seems to be the sweetspot. Most negative effects (especially broad ones like all-cause mortality) only really start showing up under 6 (or over 7 hours)[0]. Too bad the majority of reporting exaggerates and starts scaring people for going under 8 (and sometimes 9!) when yet again it seems like 6-7 is likely best, with very little 'loss' between 7 and 6. Just don't go much lower th…

Your linked consensus statement recommends against under 7 or over 9 hours, and says 7-8 is "most favourable".

Re: Association of sleep duration in middle and old age with incidence of dementia

#46

Earlier quoted context omitted.

I think Elon Musk looks his age, and looks pretty ok for a 49 year old. Granted he has money, and he's had hair transplants, but I've seen many late 40s early 50s people in much worse shape.

He's approaching the Brimley/Cocoon Line.

Passed the Wendt/Cheers Line two years after Tesla was founded and three years before he became CEO.

Re: Association of sleep duration in middle and old age with incidence of dementia

#47

So, anyone with kids is probably going to have dementia?

Not doubting anyone's personal experience, but to add another anecdotal data point: Kids weren't as disruptive to sleep as I expected after reading horror stories online. The way the internet talks about child raising sometimes makes it feel like martyrdom, but the internet tends to focus on worst-case stories and people venting about uniquely bad situations. It's almost taboo to share positive stories when other par…

Same experience here. We were lucky and with just a few adjustments are being able to cope quite well. It does require for me and my partner to go to bed earlier to have more of our sleep overlap with baby's, otherwise it'd be hell. But at the same time we get up earlier, too.

Re: Association of sleep duration in middle and old age with incidence of dementia

#48
post #33

~6 hours or just above it in general seems to be the sweetspot. Most negative effects (especially broad ones like all-cause mortality) only really start showing up under 6 (or over 7 hours)[0]. Too bad the majority of reporting exaggerates and starts scaring people for going under 8 (and sometimes 9!) when yet again it seems like 6-7 is likely best, with very little 'loss' between 7 and 6. Just don't go much lower th…

That's not what your source says though. The consensus is less than 7 hours has adverse health outcomes and more than 9 hours has an unknown effect for most people and is beneficial for certain groups of people.

My bad, I copied the wrong link (edited now). I meant to link to the largest systematic review I could find[0]. Instead I had linked to the US recommendation which I was initially thinking of linking for the part where most over-recommend 8-9.

Relevant part:

>that compared with 7 h of sleep per day, a 1-h decrease in sleep duration was associated with 6% increased risk of all-cause mortality and a 1-h increase in sleep duration was associated with a 13% increased risk of all-cause mortality (N = 241 107 adults in 43 articles).

With again, the bigger effects being under 6 but even with an per-hour average the risk from 7 to 8 is higher than 7 to 6.

0. https://cdnsciencepub.com/doi/full/10.1139/apnm-2020-0034

Re: Association of sleep duration in middle and old age with incidence of dementia

#49
post #28

I wonder if there is a very simple effect involving blood flow to the head. When you sleep, you lie horizontally, and so presumably it's easier for blood to circulate through your entire body. Maybe if you don't get enough horizontal time, it leads to head related problems like dementia and hair loss.

Possibly related: https://www.scientificamerican.com/article/deep-sleep-gives-...

Re: Association of sleep duration in middle and old age with incidence of dementia

#50
post #43

Earlier quoted context omitted.

Not doubting anyone's personal experience, but to add another anecdotal data point: Kids weren't as disruptive to sleep as I expected after reading horror stories online. The way the internet talks about child raising sometimes makes it feel like martyrdom, but the internet tends to focus on worst-case stories and people venting about uniquely bad situations. It's almost taboo to share positive stories when other par…

I’m expecting my first child in June and have sort of been preparing for misery when it comes to sleep. I appreciate you sharing this.

It can be rough. But it isn’t rough for all parents all the time. And keep this in mind: A period of bad sleep could be followed by a period of good sleep. Kids aren’t static, their behavior can vary a lot during different development stages.

Best of luck!

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