Browse: Home / Diabetes / The risks of using a melatonin supplement to help you sleep

Menu

Skip to content
  • About
  • Better Body Chemistry School
  • Book a health conversation
  • Speaking query
  • The “Big” Spoons
Header image

BBC

Small things can make a big difference to your health

advertisement

Menu

Skip to content
  • Home
  • Free Resources
    • 31 days to Better Body Chemistry
    • Willpower Report
    • Weight loss e-course
    • The ups and downs of insulin resistance
    • Candy Floss Boards
    • Weight tracker
  • Library
  • Shop
  • Baobab Adventures
  • Lucky dip
  • Buy me a coffee
  • Video gallery
  • Contact

The risks of using a melatonin supplement to help you sleep

Posted by Dr Sandy on in Diabetes | 263 Views | Leave a response

When you pop a melatonin pill, a couple of hours before bed, melatonin crashes your dinner party – negatively impacting glycemic control, increasing your odds of diabetes.

Click to listen to the audio…

The risks of melatonin supplements

women swallowing a melatonin supplement

When you pop a melatonin pill, a couple of hours before bed, melatonin crashes your dinner party – negatively impacting glycemic control, increasing your odds of diabetes

You know sleep is important, unfortunately it doesn’t come easy to you……………..

Your night valet is tardy.

Since you are a go getter, you don’t let the failings of your personal night valet, interfere with GETTING A GOOD NIGHT’S SLEEP. You outsource his services, to a stand in night valet, by popping a melatonin supplement, a few hours before bed.

It works like a charm…..

You can enjoy your evenings and WHEN YOU’RE READY, with minimum fuss and bother, hop into bed and be asleep a minute or two, after your head hits the pillow.

A melatonin supplement can help you SURVIVE.

Empowering you, to get the sleep you need, but it can be risky….

The risk comes if you’re carrying one particular variant of melatonin 2 receptor.

Yes you can – but should you ?

People who carry the super duper version of this receptor and people who have a dud version, have a much higher odds of developing type 2 diabetes.

It’s the super duper version that requires caution.

And since this is a common variant, the odds that you have it, are quite high.

So what does it do ?

The gene makes melatonin 2 receptors, which are expressed on the surface of beta cells.  If you’ve got none, you’re in trouble, but if you’ve got lots, you’re also in trouble, because your beta cells are very sensitive to melatonin.

beta cells expressing different versions of MTN1RB gene

Circulating melatonin signals to beta cells, that it is time to knock off.  This is something that hard working beta cells REALLY appreciate. When melatonin is around, they know, it’s okay to kick back and relax.

The human they’re serving is IN SLEEP MODE.

There is not going to be any need, to spring into action and pump out insulin, because the kitchen is closed FOR THE DAY. In fact, this is the time, when all those groceries that they have helped to squirrel away, will be unpacked and used.

Insulin levels will be kept super low, until melatonin leaves.

What the hell is this ?

Once dinner has been served, and enjoyed – melatonin will clear the plates, as your retire for the evening.

melatonin clearing the plates

When you pop a melatonin pill, a couple of hours before bed, the night shift boss, arrives, in the midst of the dinner run.

confused upset beta cell plate being removed before he has eaten

Chaos. Confusion. Crisis.

The poor old beta cells don’t know if they are coming or going !

The night shift boss RULES

They’ve received the signal to cease insulin production for the evening, right at the moment, when insulin is NEEDED.

The ability to put away, the current batch of groceries IS COMPROMISED.

Glycemic control waivers.

Here is what happens when healthy women take 5 mg of melatonin, just before doing an oral glucose tolerance test.

OGTT following melatonin supplementation

Comparison between the effects of placebo and melatonin administrations on plasma glucose  in response to an oral load of glucose (75 g) performed in the morning (09:00 and evening (21:00). © 2014 Associated Professional Sleep Societies, LLC.

The glucose levels are significantly higher, when the pill is taking at breakfast time and at dinner time. The reason the impact is bigger in the evening, is because the body’s ability to handle sugar is already lower later in the day.

Remember, this is in healthy ladies……..

If you’re metabolically challenged, the picture is going to be worse.

The melatonin risk

If glucose levels are constantly bumped out of range, the system becomes vulnerable, to a catastrophic failure and when beta cells fail, you get a diagnosis of type 2 diabetes.

By taking a melatonin as a sleep aide, what you gain on the swings, because you are sleeping better, is lost on the round about, because you have poorer glycemic control. Eish !

It’s not just a dinner thing

Thanks to the way exogenous melatonin behaves in the body, it’s easy to make a “mess” of things, both at dinner time AND breakfast.

Melatonin kinetics explained

Let’s say you take a dose of 5 mg of a fast release formula, around 7 pm in the evening. Based on the pharmacokinetics of insulin, the melatonin levels would peak in your system, around 30-45 minutes later. It’s at this point, the melatonin supplement, would begin the task of “getting you ready for bed”.

melatonin kinetics curve

The peak would be around 10 times higher, than what you would reach, naturally.

Plus, if you’re having a later supper, the levels would be at their highest, just as you are sitting down to your evening meal. And, because you plopped 10 times more than “normal”, even when you wake up, after your fabulous night of sleep, there could still be melatonin in your system. Enough to cause consternation and confusion, in the beta cells, if you opt for an early breakfast, especially if they’re melatonin “sensitive”.

Sleep don’t eat

The take home message…….

Melatonin and eating should never happen SIMULTANEOUSLY.

The principle applies whether you are using melatonin as a sleep aide or not.

But when you’re relying on endogenous melatonin to send you to dreamland, your activities before bed, tend to keep melatonin hiding in the cupboard, so he is a whole lot less likely to crash your dinner party. This doesn’t happen when you’re taking melatonin supplement as a sleep aide, because you’re manipulating the system.

Should you supplement ?

There is lots of science to suggest melatonin is healthful, so it’s probably okay to do it, but you do need to be cognisant of the biology. When it comes to melatonin……

TIMING IS EVERYTHING !

Use biology to supplement wisely

Based on the biology, the optimum time take exogenous melatonin, would be at least 2 hours after the last meal, to allow partial recovery of normal plasma glucose values, before melatonin arrives.

empty plate and hour glass

NOTE : If you’re struggling to get glucose packed away, something that is common when you are metabolically compromised, the 2 hour window, may need to be extended.

Acute Melatonin Administration in Humans Impairs Glucose Tolerance in Both the Morning and Evening. SLEEP (2014) 37(10):1715-1719. Patricia Rubio-Sastre, Frank A.J.L. Scheer, Purificación Gómez-Abellán, Juan A. Madrid, Marta Garaulet.

Melatonin Effects On Glucose Metabolism: Time To Unlock The Controversy. Trends Endocrinol Metab. (2020) 31(3): 192–204. Marta Garaulet, Jingyi Qian, Jose C. Florez, Josephine Arendt, Richa Saxena, Frank A.J.L. Scheer.

Further reading

longer night fasts

Giving your kitchen staff time off, can lower the risk of breast cancer

“Eating” food, whether it be healthy or not so healthy, is STRESS FUL. To create BETTER BODY CHEMISTRY, you need to give, your digestive tract, time off

insulin setting liver clock

Why midnight feasts cause bigger hips

If you eat, when you should be asleep, the enzymes contracted to work the night shift clock in for work, but they don’t do the work, so fat burning ceases.

a broken body clock causing confusion

When you fail to obey YOUR CLOCK – trillions are impacted

Stuck in the warm dark gut, your gut microflora depend on you to tell time. If you get it wrong, they get confused. And this is T-R-O-U-B-L-E.

 

Want to discover more ways to create BETTER BODY CHEMISTRY ?

[mailerlite_form form_id=1]
Posted in Diabetes | Tagged beta cells, breakfast, circadian, dinner, genes, glycemic control, insulin, melatonin, pharmacokinetics, sleep, sleep aide, sugar levels, sugar spikes, timing, type 2 diabetes

Sugar gremlins are REAL

Instagram

betterbodychemistry
@betterbodychemistry
Follow
LOW cholesterol isn’t automatically safe.

That’s the curveball.

We focus so hard on lowering LDL…
we forget it’s doing a job.

And midlife is when these conversations start showing up —
cholesterol, statins, shifting risk.

If this is on your radar…
there’s a free Navigating the Middle Years bundle open right now.

50+ resources on midlife health, hormones and what’s actually going on.

⏳ Closes tomorrow

Hop inside, you'll find the link in bio.

#midlifehealth #menopausehealth #womenshealthover40
#cholesterol #statins #ldl #hearthealth
#metabolichealth #biologymatters
betterbodychemistry
betterbodychemistry
•
Follow
LOW cholesterol isn’t automatically safe. That’s the curveball. We focus so hard on lowering LDL… we forget it’s doing a job. And midlife is when these conversations start showing up — cholesterol, statins, shifting risk. If this is on your radar… there’s a free Navigating the Middle Years bundle open right now. 50+ resources on midlife health, hormones and what’s actually going on. ⏳ Closes tomorrow Hop inside, you'll find the link in bio. #midlifehealth #menopausehealth #womenshealthover40 #cholesterol #statins #ldl #hearthealth #metabolichealth #biologymatters
5 months ago
View on Instagram |
1/9
You know that phase where things just feel a bit… off? 👀 Like what used to work for your body and health just doesn’t anymore, but you’re not totally sure what to do about it? Yeah. That one.

I am so excited to announce that my workshop, Cholesterol Curveball: What Women Need to Know, is officially part of the Navigating The Middle Years Bundle! If you've been feeling confused or overwhelmed by your changing cholesterol numbers during midlife, I created this specifically to give you practical, no-fluff answers.

Even better, I’ve teamed up with a group of amazing creators to include my workshop alongside 50+ other resources designed exactly for this stage of life. The bundle covers: ✨ energy + health (including my cholesterol workshop!) ✨ confidence + boundaries ✨ “what now?” clarity ✨ practical next steps

🎁 It’s completely free (for a limited time).

Head to the link in my bio to grab your free copy before it's gone!

#CholesterolManagement
#WomensHeartHealth
#HighCholesterol
#MenopauseHealth
#PerimenopauseHealth
#MidlifeWomen
#NavigatingMidlife
#WellnessJourney
betterbodychemistry
betterbodychemistry
•
Follow
You know that phase where things just feel a bit… off? 👀 Like what used to work for your body and health just doesn’t anymore, but you’re not totally sure what to do about it? Yeah. That one. I am so excited to announce that my workshop, Cholesterol Curveball: What Women Need to Know, is officially part of the Navigating The Middle Years Bundle! If you've been feeling confused or overwhelmed by your changing cholesterol numbers during midlife, I created this specifically to give you practical, no-fluff answers. Even better, I’ve teamed up with a group of amazing creators to include my workshop alongside 50+ other resources designed exactly for this stage of life. The bundle covers: ✨ energy + health (including my cholesterol workshop!) ✨ confidence + boundaries ✨ “what now?” clarity ✨ practical next steps 🎁 It’s completely free (for a limited time). Head to the link in my bio to grab your free copy before it's gone! #CholesterolManagement #WomensHeartHealth #HighCholesterol #MenopauseHealth #PerimenopauseHealth #MidlifeWomen #NavigatingMidlife #WellnessJourney
5 months ago
View on Instagram |
2/9
There is still time to catch my session and tune into all the other amazing presentations happening inside the Bloom & Be Summit. 

Its a free virtual Self-Care Experience for anyone who wants growth, joy, and intentional living…but doesn’t resonate with hustle culture or rigid routines. 

This experience is about small, meaningful shifts that expand your capacity…not overwhelm it.

NOTE : You don’t have to watch everything. You don’t have to change everything. You’re allowed to move gently.

If you’re ready for self-care that meets you where you are, Bloom + Be might be exactly what you need.

Join us March 24–26 (🔗in-bio)

#BloomAndBeSummit #SweetDreams #NightRoutine #BedtimeRitual #SelfCareSummit #RestfulSleep #GentleLiving #FireflyKisses #WindDown #DeepSleep
betterbodychemistry
betterbodychemistry
•
Follow
There is still time to catch my session and tune into all the other amazing presentations happening inside the Bloom & Be Summit. Its a free virtual Self-Care Experience for anyone who wants growth, joy, and intentional living…but doesn’t resonate with hustle culture or rigid routines. This experience is about small, meaningful shifts that expand your capacity…not overwhelm it. NOTE : You don’t have to watch everything. You don’t have to change everything. You’re allowed to move gently. If you’re ready for self-care that meets you where you are, Bloom + Be might be exactly what you need. Join us March 24–26 (🔗in-bio) #BloomAndBeSummit #SweetDreams #NightRoutine #BedtimeRitual #SelfCareSummit #RestfulSleep #GentleLiving #FireflyKisses #WindDown #DeepSleep
6 months ago
View on Instagram |
3/9
If you’ve been craving self-care that actually supports your real life…this is for you.

Bloom + Be: A Gentle Self-Care Experience is a free, 3-day virtual self-care event happening March 24-26, created for creative, kindhearted women who want more joy, clarity, and momentum…without hustle culture or pressure.

This isn’t about adding more to your to-do list.

It’s about caring for your mind, body, and energy in ways that help you feel lighter and more connected to yourself.

Come exactly as you are. Take what helps. Leave the rest.

Free tickets are available now (🔗in-bio)

#BloomAndBe
#BloomAndBeSummit
#SleepBetter
#FallAsleepFast
#SleepScience
#MindBodySoul
#SlowLiving
#NourishYourself
#HolisticWellness
betterbodychemistry
betterbodychemistry
•
Follow
If you’ve been craving self-care that actually supports your real life…this is for you. Bloom + Be: A Gentle Self-Care Experience is a free, 3-day virtual self-care event happening March 24-26, created for creative, kindhearted women who want more joy, clarity, and momentum…without hustle culture or pressure. This isn’t about adding more to your to-do list. It’s about caring for your mind, body, and energy in ways that help you feel lighter and more connected to yourself. Come exactly as you are. Take what helps. Leave the rest. Free tickets are available now (🔗in-bio) #BloomAndBe #BloomAndBeSummit #SleepBetter #FallAsleepFast #SleepScience #MindBodySoul #SlowLiving #NourishYourself #HolisticWellness
6 months ago
View on Instagram |
4/9
Everyone fears sugar spikes… but almost no one realises sugar crashes shake your blood vessels too.
Inside your bloodstream, stability matters more than perfection.

Agent Vaso is the quiet operator keeping your flow steady — until things drop faster than he can respond.

If you want more molecule-level stories that help you understand what’s actually happening in your body, follow along.

This is the biology no one ever teaches you.

#sugarcrash
#hypoglycemia
#bloodflow
#endothelium
#vascularhealth
#bloodvessels
#healthyflow
#glucoselevels
#glycemicvariability
#betterbodychemistry

#betterbodychemisty
betterbodychemistry
betterbodychemistry
•
Follow
Everyone fears sugar spikes… but almost no one realises sugar crashes shake your blood vessels too. Inside your bloodstream, stability matters more than perfection. Agent Vaso is the quiet operator keeping your flow steady — until things drop faster than he can respond. If you want more molecule-level stories that help you understand what’s actually happening in your body, follow along. This is the biology no one ever teaches you. #sugarcrash #hypoglycemia #bloodflow #endothelium #vascularhealth #bloodvessels #healthyflow #glucoselevels #glycemicvariability #betterbodychemistry #betterbodychemisty
7 months ago
View on Instagram |
5/9
If you enjoy understanding your chemistry instead of guessing, come hang out in my world.

👉 Follow @betterbodychemistry
👉 Join my weekly email list - you will find the link in my bio

#nocturia #nighttimepee #sleephealth #hearthealth #fluidretention #metabolichealth #insulinresistance #betterbodychemistry #scienceexplained #healthscience #overactivebladder #sleepbetter #agingwell
betterbodychemistry
betterbodychemistry
•
Follow
If you enjoy understanding your chemistry instead of guessing, come hang out in my world. 👉 Follow @betterbodychemistry 👉 Join my weekly email list - you will find the link in my bio #nocturia #nighttimepee #sleephealth #hearthealth #fluidretention #metabolichealth #insulinresistance #betterbodychemistry #scienceexplained #healthscience #overactivebladder #sleepbetter #agingwell
7 months ago
View on Instagram |
6/9
I’ve spent a long time trying to figure out how to explain what I actually do in a way that feels honest — not salesy, not dramatic, and not simplified to the point of being wrong.

What I finally landed on is something I call Unlocking Better Body Chemistry.

It’s not a program or a protocol.
It’s a way of looking at health problems — especially metabolic ones — that focuses on why things aren’t responding, instead of just chasing symptoms.

Most people I talk to are already doing a lot of “right” things.
They’re just doing them without a clear understanding of how their own body is functioning.

This framework is how I make sense of bloodwork, symptoms, and context together — and how I help people stop guessing about what actually matters.

I’ve put it all into a page so it’s clear, grounded, and easy to read.

If you’re curious, you can read it here. (link in first comment)

#signatureframework #metabolichealth #healthframework #healthwithoutthehype
betterbodychemistry
betterbodychemistry
•
Follow
I’ve spent a long time trying to figure out how to explain what I actually do in a way that feels honest — not salesy, not dramatic, and not simplified to the point of being wrong. What I finally landed on is something I call Unlocking Better Body Chemistry. It’s not a program or a protocol. It’s a way of looking at health problems — especially metabolic ones — that focuses on why things aren’t responding, instead of just chasing symptoms. Most people I talk to are already doing a lot of “right” things. They’re just doing them without a clear understanding of how their own body is functioning. This framework is how I make sense of bloodwork, symptoms, and context together — and how I help people stop guessing about what actually matters. I’ve put it all into a page so it’s clear, grounded, and easy to read. If you’re curious, you can read it here. (link in first comment) #signatureframework #metabolichealth #healthframework #healthwithoutthehype
7 months ago
View on Instagram |
7/9
If your liver folded watching this — you’re exactly who I talk to every week.

Not your standard eat less and move more advice.
Not wellness fluff.
Biochemistry.

Join the Better Body Chemistry list.
📩 Link in bio.

#fattyliver
#insulinresistance
#metabolichealth
#alcoholandhealth
#metabolicstress
#insulinresistant
#metabolichealthtips
#NAFLD
#betterbodychemistry
betterbodychemistry
betterbodychemistry
•
Follow
If your liver folded watching this — you’re exactly who I talk to every week. Not your standard eat less and move more advice. Not wellness fluff. Biochemistry. Join the Better Body Chemistry list. 📩 Link in bio. #fattyliver #insulinresistance #metabolichealth #alcoholandhealth #metabolicstress #insulinresistant #metabolichealthtips #NAFLD #betterbodychemistry
8 months ago
View on Instagram |
8/9
Your body isn’t misbehaving.
Its clocks are out of sync.

Every cell runs a molecular timekeeper — CLOCK, BMAL, PER and CRY — driving your energy, appetite, sleep pressure and mood.

When those clocks drift, everything feels “off,” and people blame willpower instead of timing.
If you want science that explains your biology (not wellness slogans), link in bio to join my email list

#circadianrhythm #molecularclock #CLOCK #BMAL #PER #CRY #circadianbiology #bodyclock #metabolism #timing #BetterBodyChemistry
betterbodychemistry
betterbodychemistry
•
Follow
Your body isn’t misbehaving. Its clocks are out of sync. Every cell runs a molecular timekeeper — CLOCK, BMAL, PER and CRY — driving your energy, appetite, sleep pressure and mood. When those clocks drift, everything feels “off,” and people blame willpower instead of timing. If you want science that explains your biology (not wellness slogans), link in bio to join my email list #circadianrhythm #molecularclock #CLOCK #BMAL #PER #CRY #circadianbiology #bodyclock #metabolism #timing #BetterBodyChemistry
8 months ago
View on Instagram |
9/9
View on Instagram
  • Popular
  • Featured
  • Recent
  • asprosin the sugar plum fairy

    Why sugar levels are high despite NOT eating

    23088 views / Posted
  • oatmeal breakfast being beaten by egg

    Which is a better breakfast, egg or oatmeal ?

    22833 views / Posted
  • poop getting stuck

    The fix for constipation is to go on a low fibre diet

    22547 views / Posted
  • chewing gum relieving postoperative ileus

    A stick of chewing gum gets the gut going after surgery

    17013 views / Posted
  • carbonated water bubbles fill you up

    Fizzing up the water flattens your appetite

    15892 views / Posted
  • sun extracting cholesterol

    Make sure you have your “annual” check-up in the summer time

    / Dr Sandy
  • sending your kid to bootcamp won't stop childhood obesity

    Moving more won’t stop your kid from getting fat

    / Dr Sandy
  • cholesterol at the scene of the accident

    Bone cells are stiffening up your arteries not cholesterol

    / Dr Sandy
  • brain size the problem in ADHD

    Are kids with ADHD just acting according to their brain age

    / Dr Sandy
  • plastering the blood vessel with calcium

    Calcium supplements are building bones and breaking hearts

    / Dr Sandy
  • Plant baring hamburgers

    Does Soy Build Muscle? Exploring the Science Behind Protein Choices

    / Dr Sandy
  • The Dark Side of Weight Loss Drugs

    / Dr Sandy
  • Mother Nature stealing from peter to pay paul

    Are You Losing Muscle Without Realizing It? Here’s How to Protect It

    / Dr Sandy
  • Your Resting Heart Rate could be a Red Flag for Metabolic Trouble

    / Dr Sandy
  • baby muscle mesmerized by the TV

    Tots watching too much TV end up being muscle flops

    / Dr Sandy

RSS Recent posts

 
 
 

Categories

Featured posts

  • asprosin the sugar plum fairy

    Why sugar levels are high despite NOT eating

    23088 views / Posted
  • oatmeal breakfast being beaten by egg

    Which is a better breakfast, egg or oatmeal ?

    22833 views / Posted
  • poop getting stuck

    The fix for constipation is to go on a low fibre diet

    22547 views / Posted
 

©2011-2025 Spoonful of Science

Menu

  • Meet Dr Sandy
  • Disclosure/disclaimer
  • Privacy policy
  • Comment policy
  • Contact