What Your Cravings Are Actually Trying to Tell You

April 30, 2026

How mental load influences cortisol rhythm, blood sugar and nervous system tone

If you have ever found yourself standing at the pantry at 3pm reaching for something sweet, or woken at 2am with an inexplicable urge for something salty, or noticed that no matter what you eat, you never feel quite satisfied — I want to offer you a different way of looking at that.

Your body is not out of control. It is communicating. And if you know how to listen, what it is saying makes complete sense.

Cravings are not a willpower problem. They are not a discipline problem. They are a physiology problem. And after thirty years of sitting with people and looking at what is actually going on beneath the surface, I can tell you that almost every craving has a story behind it — a real, biochemical, traceable story.

Let me walk you through some of what I see.

When you crave sugar

The obvious answer is blood sugar instability — when glucose drops, the body sends out an urgent request for fast fuel. But the conversation rarely stops there.

What most people miss is that sweet cravings, particularly in the afternoon or evening, are often the body reaching for serotonin. Your brain uses carbohydrates as one of the fastest routes to serotonin production, which is why stress, poor sleep, and low mood so frequently arrive together with an afternoon craving for something sweet. You are not being weak. You are experiencing neurotransmitter biochemistry.

There is also a dopamine element here. Sugar triggers the reward pathway, and over time, repeated hits can change how sensitive that pathway is — meaning you need more to feel the same effect. This is not a character flaw. It is receptor adaptation.

When you crave salt

Salt cravings are one of the most underestimated signals I see, and they almost always point somewhere more interesting than sodium intake.

The adrenal glands regulate how much sodium your kidneys retain. When the adrenals are under prolonged pressure — from stress, disrupted sleep, or sustained physiological demand — that regulation shifts, and the body starts excreting more sodium than it should. The result is a deep, almost primal pull toward salt.

This is different from craving salty snacks for comfort. That tends to be a reward pathway story. But if you find yourself adding salt to everything, craving mineral-rich foods, and noticing it worsens when life is hard — your adrenal system is worth looking at.

Electrolyte depletion more broadly can drive this too. Low magnesium, potassium, or chloride can all present as salt cravings, particularly in women who exercise heavily, live in a hot climate, or have had a period of digestive disruption where mineral absorption has been compromised.

When you crave chocolate

This one I single out because it comes up constantly, and because the reason behind it is genuinely interesting.

A strong pull toward chocolate — particularly dark chocolate — is one of the most reliable indicators of magnesium insufficiency I see in practice. Cacao happens to be one of the richest food sources of magnesium available to us. When the body has connected that particular dot, the craving feels almost medicinal. Because it is.

Magnesium is involved in over three hundred processes in the body. Sleep. Nervous system tone. Blood sugar regulation. Energy production. Muscle function. A quiet insufficiency here does not announce itself dramatically — it tends to show up as a cluster of things that feel vaguely off simultaneously.

When you crave carbohydrates — bread, pasta, anything starchy

A generalised pull toward comfort carbohydrates is often a gut story.

Certain bacterial species in the gut preferentially feed on simple carbohydrates and sugars. When those populations are disproportionate, they create a physiological demand for their preferred fuel — and that demand registers in your nervous system as a craving. You are not imagining it. You are experiencing the output of a microbial community that has developed its own agenda.

This is one reason why cravings can persist even when someone is eating well. The driving force is not nutritional. It is microbial. And addressing food alone, without addressing what is happening in the gut, tends to produce frustrating results.

When you crave red meat or protein

A strong drive toward red meat or protein-dense foods is often the body seeking iron — specifically the form of iron found in animal foods that the body absorbs most readily. This is particularly common in women who are still menstruating, especially if periods are heavy.

But it is not only iron. Red meat is rich in zinc, B12, and nutrients that support energy, immunity, and cognitive clarity. When the body reaches for a steak, it is often doing the most efficient nutritional accounting it knows how to do.

I remember when I was a vegetarian for many years and would be on a long-distance run, and all I could think about was chicken and mushrooms – I was iron and B12 deplete, and my body was asking me to fuel it with the only foods it instinctively knew how.

A broader craving for protein can also point to amino acid insufficiency — relevant to neurotransmitter production, immune function, and tissue repair. And sometimes the issue is not intake but absorption: the body is not getting what it needs from the protein it is already eating.

When you crave fat — avocado, cheese, anything rich

Dietary fat is the raw material for hormone production. Oestrogen, progesterone, testosterone, cortisol — all synthesised from cholesterol. When hormone production is under pressure, as it often is during perimenopause or prolonged stress, the body increases its appetite for fat.

Fat cravings can also signal low fat-soluble vitamins — A, D, E, and K2. Vitamin D insufficiency, in particular, is almost universal in the women I see. It does not announce itself loudly. It just quietly affects mood, immunity, bone density, and insulin sensitivity — and occasionally drives a craving for eggs or liver or full-fat dairy that the body cannot easily explain.

Now for the ones that surprise people…

When you crave ice

A specific craving for chewing ice — not cold water, not cold drinks, but ice itself — is one of the most reliable clinical indicators of iron deficiency I know. The mechanism involves how iron affects dopamine signalling in the brain. Most people who experience this have no idea what is behind it, and feel quietly embarrassed by it. There is nothing to be embarrassed about. Your body is being very precise.

Pickles, vinegar, or anything sharply sour

A pull toward acidic foods is often the body compensating for low stomach acid. This is more common than most people realise, particularly in women over forty, after long-term antacid use, or following a course of antibiotics. The body reaches for acidity because it needs it for digestion — to break down protein, to absorb minerals, to protect against certain gut pathogens. When that acidity is low, sometimes the craving does the asking.

Lemons or very tart citrus

Similar, but this one can also point to sluggish bile flow or liver congestion. The body reaches for bitter-sour compounds that stimulate digestive secretions and get things moving. If this one resonates alongside bloating after meals or a general heaviness through the right side, it is worth paying attention to.

Dirt, clay, or chalk — or a pull toward non-food substances

I include this one because people rarely mention it, partly from embarrassment. Cravings for non-food substances almost always indicate significant mineral depletion — most often iron, zinc, or calcium — and are seen more frequently in pregnancy. If this has ever been your experience, it is not strange. It is your body being desperate and very literal.

Burnt or smoky foods — anything intensely flavoured

I remember growing up, my mother would eat anything burnt – burnt toast, burnt onions, anything burnt…… Now I know that she was most likely zinc-deficient, and I didn’t know it at the time.

Zinc deficiency alters both taste and smell perception. People with low zinc often find that food tastes muted or wrong, and they reach for intensity — charred, smoked, heavily seasoned — to get any satisfying flavour signal at all. If food has started to taste less interesting to you, or you need much more seasoning than you used to, zinc is one of the first places I now look.

Raw onion, garlic, or sulphur-rich foods

A craving for raw alliums can indicate sulphur insufficiency — relevant to liver detoxification pathways and the production of glutathione, one of the body’s most important antioxidants. It can also be the gut asking for prebiotic compounds to feed beneficial bacteria.

Sparkling water or anything fizzy

Sometimes this is the nervous system reaching for stimulation when it is depleted. Sometimes it loops back to low stomach acid — the body drawn toward carbonation as a digestive cue. Small signal, but worth noting if it is persistent.

The thread that runs through all of this.. Cortisol.

Almost every craving pattern I have described above can be driven, amplified, or made more complex by cortisol dysregulation. When the stress response has been running hard for too long, it affects blood sugar, mineral retention, gut function, neurotransmitter production, digestive capacity, and hormone balance — simultaneously.

This is why some people experience cycling cravings that shift throughout the day and do not resolve regardless of what they eat. Sweet one hour, salty the next, carbohydrates in the evening, never quite satisfied. That is not a food problem. That is a nervous system and adrenal story, and it needs to be addressed at that level.

What I want you to take from this

Cravings are not random. They are not moral failings. They are data.

Your body is amazing and constantly trying to tell you something about its internal environment. And when you know how to read those signals — when someone who has spent three decades doing this work sits down with you and looks at the full picture — the pattern becomes clear very quickly.

The women I work with come in having tried the diets, having pushed through the fatigue, having told themselves they just need more willpower. What they actually need is someone who can look beneath the surface and identify what is actually driving what they are experiencing.

If something in this article made you stop and think — that is usually the beginning of something.