Sleep and shift work

Why the standard advice does not fit you

I am Kiki and I hold shift-workers, which meets at times that look wrong on a calendar and are exactly right if you finish at seven in the morning.

Here is the problem in one paragraph. Nearly everything written about these medicines quietly assumes a regular week: a dose day that is the same every week, meals at recognisable hours, a night’s sleep in the dark, and enough routine that you can tell what the drug is doing because everything else is holding still. Shift work removes all four. Your dose day drifts because your days off drift. Your meals happen at four in the morning in a staff room with a vending machine. You are already tired, so fatigue tells you nothing. And you cannot compare this week to last week because they were different weeks.

None of that means this cannot work for you. Plenty of members in that circle are years in and doing fine. It means you need a slightly different method: one built around the actual rota rather than around an imagined evening, and one that separates the few things worth being rigid about from the many things that can float.

The one thing to be rigid about

Anchor the dose to the calendar, not to the rota.

Members who get into trouble almost always got there by moving the injection to suit the week — a bit earlier before a run of nights, a bit later after them — until the gap between doses had quietly become elastic and they could no longer tell whether a bad stretch was the drug, the schedule or the timing. Timing changes are a conversation with your prescriber, not a weekly convenience.

So pick a fixed day and keep it, and set an alarm with the day’s name in it, because after a run of nights nobody knows what day it is. Members use pill organisers, a note on the fridge, a repeating calendar entry, a partner who asks. Whatever survives your worst week is the right system.

Which day? Choose the one where the two or three days after it fall on your lightest duties, since that is when early symptoms tend to land. For a lot of members that means dosing on the first day of a run of days off rather than heroically before a set of nights. If your rota rotates on a fixed cycle, that calculation is worth doing properly once — see the titration planner for laying out the weeks, and take the result to your prescriber rather than acting on it alone.

Eating on nights, without a plan that assumes a kitchen

The realistic goal on a night shift is not a good pattern. It is enough fluid, enough protein, and something you can actually get down at four in the morning when you are queasy and there is nothing but a vending machine and a kettle.

Members find that a small number of prepared anchors beats any intention formed in advance. Things that live in a bag and survive a locker. Something warm that only needs a kettle. Something salty for the nights you have not drunk enough. A protein source you find tolerable when nothing appeals, which is a genuinely different list from the one you like when you are well — eating enough when nothing appeals and protein without a chore are the relevant pages, and the protein and fluid target tool will give you a number to aim at across the whole twenty-four hours rather than per meal.

Two shift-specific traps. The first is stacking your entire intake into the hours after you get home, which for many members reliably produces reflux and a wrecked sleep — reflux and burping covers why. The second is coffee doing the work that food should be doing, which feels efficient for about a fortnight.

Sleep itself

Nothing here is specific to these medicines; it is standard shift-work sleep practice, which most people have heard and few have actually implemented.

Light is the strongest lever you have. Getting daylight in your eyes when you want to be awake, and blocking it hard when you want to sleep, does more than anything else on the list. Blackout material, a proper eye mask, sunglasses on the drive home if the sun is up. Members are consistently surprised how much the drive home costs them.

Protect the sleep window like a shift. Same room, same darkness, phone out of the room, household informed in writing on the door if necessary. A short nap before a night shift is well supported and helps most people; a long one immediately after getting home often eats the sleep you needed later.

Caffeine has a long tail. Members who moved their last coffee to the first half of the shift generally slept better within a week and were annoyed about it.

And a real medical note: if you snore, wake unrefreshed, or have been told you stop breathing, ask about sleep apnoea. It is common, it is treatable, and there is now trial evidence that tirzepatide reduces its severity in people with obesity — which also means untreated apnoea can be quietly making your fatigue much worse than the medicine ever did.

Telling fatigue apart from fatigue

The hardest thing about this combination is attribution. Early-months fatigue on these medicines is common and under-discussed. Shift-work fatigue is your baseline. Dehydration produces something that feels like both. So does undereating. So does anaemia, low iron, thyroid trouble and low mood, all of which are commoner than people think and all of which are testable.

The method that works is boring: change one thing at a time and write down what happened. A two-line note after each shift — how you slept, what you managed to eat and drink, how the day after the dose was — will tell you within a month what the pattern actually is. A symptom diary that you will actually keep is deliberately minimal, and the symptom tracker does the same job on a phone at three in the morning.

Take the pattern, not the feeling, to your appointment. The difference between I am tired all the time and the two days after each dose are unworkable when they land on nights is the difference between sympathy and a plan. Talking to your GP when time is short has more on that.

And if fatigue is severe, sudden, or comes with dizziness, breathlessness or fainting, stop attributing it to the rota and get it looked at — when a symptom needs a clinician.

The limits of all this

I will not pretend the circle solves shift work. Some rotas are genuinely incompatible with doing this comfortably, and a few members have concluded that the honest answer was to change the rota, change the job, or wait until a rotation ended before starting. That is a legitimate outcome and not a failure of effort.

There is also a research gap you should know about. Shift workers are largely absent from the trials, and shift work independently affects glucose handling, appetite regulation and cardiovascular risk. So when someone quotes an average from a study at you, remember that the average was produced by people sleeping at night. Nobody has told us what these medicines do in a body running on a permanently displaced clock, because nobody has looked.

What we do have is a couple of hundred people who have made it work. Come and ask them. The three in the morning circle exists because three in the morning exists.