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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Dh changes when a full moon

206 replies

Touristtrainstuffedtothebrim · 31/07/2026 23:30

Not in a werewolf way and i’m not a woo type of person, but I’ve noticed a few times (going to have to start writing it down) that on the build up
to a full moon, he can be very moody and not nice sometimes and the day after-few days after, he’s back to himself, but much nicer-kinder

It’s happened too many times now to feel like a coincidence

Am I the one going mad?

OP posts:
MyDuvetDay · 01/08/2026 01:40

My mother worked her whole career in A&E and said that full moons were the worst nights

Christmasbear1 · 01/08/2026 01:47

Yeah my siblings mental health gets worse in the build up to a full moon. My dog too seems affected

WerewolfOfLoudon · 01/08/2026 01:49

CypressMoon · 01/08/2026 01:09

Me too. I wanted some rapid hair growth and baying at the moon. 😟

My inappropriate hair growth is due to PMOS (formerly known as PCOS) but the lack of sleep during the full moon might just make me go howl at it someday. It's not something I have tried yet.

@Flannelfeet I'm with you on the headaches too! I love thunderstorms because of the pressure release they bring. Can you smell incoming snow too by any chance?

@Touristtrainstuffedtothebrim Is he struggling with sleep? It is more common than you would think for the full moon to cause insomnia and the resulting irritability. There have been threads on here about it, obviously it's mostly women's experience. Close friend is a psychiatric nurse and he struggles to sleep at the same time, while dealing with the most volatile cases at work.

Growlybear83 · 01/08/2026 02:02

My mum had severe dementia and spent her last few months in a care home. Both of the floor managers told me several times that they dreaded the full moon each month because it affected the residents’ behaviour and mood so significantly.

PyongyangKipperbang · 01/08/2026 02:59

Flannelfeet · 01/08/2026 00:00

Ohhh, I get that too. I have known for 2 days the rain was coming and possibly thunder because my head has been thumping. Massive downpour (got caught in it and bloody soaked).
Guess what? I feel so much better...hope theres a wee bit more tomorrow (after i get my washing in 🤭.)

Yeah I call them "pressure headaches", my mother gets them too. They are not like normal headaches.

PyongyangKipperbang · 01/08/2026 03:03

MrsBirkett · 01/08/2026 01:03

I was a midwife for many years. I don't care if the research doesn't back it up, the busiest, maddest nights were always when there was a full moon.

I read that when I was pg with DC 3 (now 26) and told then DH. He suggested it was because amniotic fluid was tidal, which I have to admit I find funny!

11AndCounting · 01/08/2026 03:36

The full moon does modestly reduce sleep quality, which can make people a bit grouchier.

But crime rates and ER admissions are so easy to measure that any real behavioural impact would be obvious — and the evidence is somewhere between "non-existent" and "extremely thin".

11AndCounting · 01/08/2026 03:39

RisingSunn · 01/08/2026 00:19

Apparently that’s where the origin of “lunatic” comes from. Original - meaning being struck by the moon!

I think you're a biased source on this one.

PyongyangKipperbang · 01/08/2026 04:02

11AndCounting · 01/08/2026 03:39

I think you're a biased source on this one.

The reason that lunatics where so called absolutely was because it was believed that the moon made people mad. That it isnt true doesnt mean that this wasnt considered a medical fact at the time.

11AndCounting · 01/08/2026 04:26

PyongyangKipperbang · 01/08/2026 04:02

The reason that lunatics where so called absolutely was because it was believed that the moon made people mad. That it isnt true doesnt mean that this wasnt considered a medical fact at the time.

I still think the PP has an obvious anti-moon agenda.

Walkden · 01/08/2026 04:37

of course the full moon affects people! given "that we're mostly made of water, think of the effect of the moon on the tides etc and on nature. of course it affects us as well"

As a previous poster pointed out this comment is largely hokum. There is a difference in gravity from the oceans facing the moon and the oceans on the opposite side of the Earth, causing bulges in those bodies of water and low tides in the areas between them.

This difference is negligible for a human being....

kattyjean · 01/08/2026 08:01

okeydokeymokey · 01/08/2026 01:06

so many personal experiences here verifying.

Also this full moon was a big one, sun conjunct jupiter exactly opposite moon conjunct pluto. if you know your astrology you'll know how intense that would be!

So why isnt there any evidence to back it? It would be so easy to evidence, I think people have just encouraged it and it’s just confirmation bias at this point.

Gettingbysomehow · 01/08/2026 08:04

Its not your imagination. Every nurse in the land knows it will all go tits up on the full moon and patients will run amok.

Owly11 · 01/08/2026 08:07

kattyjean · 31/07/2026 23:43

So I came here to say that it’s a known fact that behaviour changes with a full moon and that’s there’s data from police and hospitals to support this, but on double checking AI tells me this is a myth and there is no such data 🤣 however, it did say the one small data insight we have is that full moons can impact sleep and people can sleep on average 20 mins less so maybe irritability can be caused by that?!

I agree with this. The full moon can really give you a rubbish night's sleep, probably just because it's so bright and light outside all night. A bad night's sleep leads to irritability.

VibrancyInspector · 01/08/2026 08:13

I work in care and the amount of times someone has said ‘bloody hell whats going on, is it a full moon or something?!’ And we’ve checked and it is, can’t be a coincidence. So it’s not just because we know it’s a full moon and are on the look out for it.

and I don’t think it’s confirmation bias because I do remember a time (but only one time) where someone said it and it wasn’t a full moon- almost always it is

kattyjean · 01/08/2026 08:13

Gettingbysomehow · 01/08/2026 08:04

Its not your imagination. Every nurse in the land knows it will all go tits up on the full moon and patients will run amok.

So I will ask again, why isn’t there data to back it? With the amount of data collected via hospitals and police it would show clear spikes in certain things?

HeronWading · 01/08/2026 08:14

BoredZelda · 01/08/2026 00:14

I have heard this so many times and it’s utter nonsense. It’s confirmation bias, nothing more.

This. Like the ‘the periods of women living in close proximity synchronise’. Has been studied often, and no data backs it up.

Weeellokthen · 01/08/2026 08:16

I read yrs ago that Sussex or Essex police drafted in extra police when it was a full moon. A&E's are also busier at these times.
Just saying

SunwaysSystems · 01/08/2026 08:19

Weeellokthen · 01/08/2026 08:16

I read yrs ago that Sussex or Essex police drafted in extra police when it was a full moon. A&E's are also busier at these times.
Just saying

Busier in terms of more patients turning up? By how much?

itsgettingweird · 01/08/2026 08:20

It’s a thing!!! I have worked in education for decades and was always told when the class got more feral “it’s a full moon” and I was always skeptical’

Now I’m head of behaviour - and he’s, they are my busiest days 🤣

I would have no idea it’s a full moon I only know because I sense it and check and it always is

Weeellokthen · 01/08/2026 08:22

SunwaysSystems · 01/08/2026 08:19

Busier in terms of more patients turning up? By how much?

Not overrun but definately a few more mh issues

Hotupnorth · 01/08/2026 08:23

deeplybaffled · 31/07/2026 23:45

DH works in a police control room in a major city. He and his colleagues definitely believe full moon affects behaviour!

I worked in a call centre years ago and it was a standing joke that the nutters came out of the woodwork customers were more "challenging" when there was a full moon.

The joys of working with the general public.

TheHonestSnail · 01/08/2026 08:24

kattyjean · 31/07/2026 23:48

So this is what I always believed but apparently there’s been a lot of studies on this and there is no data from police etc to back it up (caveated to say from AI!)

My friend did her undergraduate dissertation on this (because we worked in hospitals where some staff would blame behaviours on the full moon) and she found zero evidence to support it.

Tryingtobenormal124 · 01/08/2026 08:24

Friends husband works in hospital for criminal insane and apparently a lot of the patients get worse when it happens

ThatCyanCat · 01/08/2026 08:25

SunwaysSystems · 01/08/2026 00:19

How does the sun control the tides?

Do you see glasses of water being affected by the moon? What about a big Sports Direct mug of tea that someone's forgotten about? Or that bowl of washing up your DH 'left to soak'? They're nearly 100% water.

It is a theory I have heard, but I wasn't being entirely serious in repeating it. The "obviously" clearly didn't do as much heavy lifting as I thought...

ETA: If there was anything to this theory, it would be about when the moon is at apogee or perigee.