Cracked Heels and Vitamin Deficiency: Is It True?

By Nanny Nails, nail salon in Nakhon Phanom | Updated 27 Sept 2026

You are scrolling on your phone before bed and your heel rasps against the blanket. You search what causes cracked heels and find a post saying your body is short of vitamins, followed by a long list of them. Some posts even come with a link to buy a multivitamin. The older relatives at home say the same thing: heels like that, you must be low on vitamins. This article sets out how true that belief really is, which vitamins people usually blame, what the evidence says, and when cracked heels are a health signal worth seeing a doctor about.

If you have ever bought vitamins because of your cracked heels, you are far from alone. The belief has been around in Thailand for a long time and there is a grain of truth in it, but the grain is much smaller than people make out. Once you know what is really behind your cracked heels, the money you would spend on vitamins might go on one jar of heel cream that works better, or on getting checked for something that matters more.

The short answer: are cracked heels caused by a vitamin deficiency?

Usually, no.

In most people, cracked heels come from heel skin that is dry and thick, pressed hard every day as you stand and walk. That is the main cause, and the care recommended is putting moisture back into the skin, not taking vitamins.

Some vitamin deficiencies really can change the skin, but most posts leave out two things. First, deficiencies bad enough to change your skin are uncommon in people who eat normally. Second, a real deficiency almost never shows up only on the heels. It comes with other symptoms too.

Where does the belief come from?

The idea that cracked heels mean missing vitamins did not appear out of nowhere. It has several roots.

• It is half true. A severe lack of vitamin B3, vitamin C or zinc can cause skin problems. As that gets passed along, the parts about severe and rare drop away, leaving only cracked heels equals missing vitamins.
• Online articles with something to sell. Many of the articles that rank for this search belong to clinics or supplement brands. Most carry words like may and can contribute, but readers remember only the list of vitamins.
• Advice from older generations. In the past, diets were less varied and poor nutrition was more common, so advice to eat plenty of vegetables and fruit made sense. Applied today, it no longer matches the main cause.
• Coincidental timing. People tend to start taking vitamins when their heels are at their worst in the cool season. When the rainy season brings humid air, the heels improve by themselves, so the vitamins get the credit even though the weather may have done the work.

Which vitamins do people blame, and what does the evidence say?

About five names come up again and again in online posts. Here is what is actually true for each.

On pellagra and zinc deficiency: pellagra has three main symptoms as dermatitis, diarrhoea and dementia, notes that it can be fatal if untreated, and says it is now very rare where people have enough to eat.

Look closely at the right-hand column. Every real deficiency comes with other symptoms that are more obvious than cracked heels. If you are otherwise well, eating normally, without long-running diarrhoea, and the rest of your skin is fine but the rim of your heel cracks, the chance that a vitamin deficiency is to blame is very small.

So what causes cracked heels in most people?

Heel skin is thicker than skin elsewhere and has almost no oil glands. When you stand or walk, your body weight pushes the fat pad under the heel outwards. If the skin around the rim has dried hard, it cannot stretch fast enough and it splits.

Common triggers are wearing flip-flops or open-back shoes all year, going barefoot, standing on hard floors for long hours, long hot soaks, scraping the heels hard with a blade, using cream only now and then, and dry air at the end of the year. All 6 habits that bring cracked heels back every year are explained, with fixes, in What causes cracked heels? 6 mistakes that make them crack again every year.

A quick self-check: ordinary cracked heels, or something else?

Ordinary cracked heels usually look like this: thin cracks along the rim of the heel, thick dry skin around them, worse in the cool season, and better once you use cream regularly.

These signs suggest something else may be going on and are worth having a doctor check:

• Very dry skin all over, along with feeling cold easily, tiring easily and gaining weight for no clear reason, which may point to a thyroid problem.
• Feeling thirsty often, passing urine often, slow-healing wounds or numb feet, which may point to diabetes.
• Itching and flaking between the toes, or the whole sole peeling, which may be a fungal infection.
• Thick silvery patches or red, scaly rashes on the elbows, knees or scalp, which may be psoriasis.
• A sunburn-like rash on sun-exposed skin with long-running diarrhoea, or bleeding gums, easy bruising and heavy hair loss. This is where a real nutritional deficiency may be involved.
• No improvement at all after about a month of regular cream and care.

Notice that in this list, a vitamin deficiency is just one item, and it always comes with other symptoms. If any of these fit, do not guess. Let a doctor check, since some of them need a blood test to confirm.

Cracked heels and diabetes: more important than vitamins

If there is one condition that cracked heels should make you stop and think about, diabetes matters far more than vitamins. People with diabetes may have reduced nerve function in the feet, sweat less so the skin dries out, feel pain later, and heal more slowly. A small crack in the heel can turn into an infected wound before they notice.

Foot-care advice for people with diabetes includes:

• Check your feet every day, including the soles, heels and between the toes.
• Moisturise your feet every day, but not between the toes.
• Do not soak your feet for long, and do not scrape or cut hard skin yourself.
• If you see a wound, a deep crack, swelling, redness or pus, see a doctor straight away.

If you or someone at home has diabetes and the heels start to crack, talk to the doctor or nurse who looks after the diabetes early. And if you have never been tested but recognise the diabetes signs above, getting your blood sugar checked is worth far more than buying vitamins on your own.

Can I just buy vitamins and take them myself?

If you eat a varied diet of rice, fish, meat, eggs, vegetables, fruit and nuts, most people already get these vitamins from food. A simple home meal like grilled fish, stir-fried morning glory, boiled eggs and some papaya or orange already has niacin, vitamin C and zinc on one table.

If you are thinking of buying supplements yourself, keep these in mind:

• More is not better. Some vitamins build up in the body, and too much of some minerals interferes with how you absorb others.
• We are clear that you should not take zinc supplements on your own without asking your doctor first.
• If you take regular medication, some vitamins and supplements interact with it. Ask a doctor or pharmacist first every time.
• Vitamins do not soften a thick, dry heel rim. Even if you take them, the split rim still needs cream.

What helps your heels faster than vitamins

For ordinary cracked heels, what we recommend is caring for the skin directly. A simple bedtime routine:

1. Soak your feet in warm water for about 10 minutes, then pat dry.
2. Rub your heels gently with a loofah or foot brush. No blades.
3. Apply a thick cream. Creams with urea, salicylic acid or lactic acid help soften thick skin, and you can finish with petroleum jelly.
4. Sleep in thin cotton socks.

Urea and acid creams can sting a little, so use them no more than twice a day and never on open wounds. Ask a pharmacist which strength suits you. If you have diabetes, skip the soaking and rubbing and talk to your doctor first. Done consistently, most people notice softer heels within a few weeks, which is quicker than waiting on vitamins your body may never have been short of.

If your hands are dry and cracking too, read What causes dry hands.

Heels soft again? A little extra so your feet look cared for

Once their heels feel soft, many people start wearing open-toe shoes again. The quickest way to make feet look fresh is the toenails. Neatly trimmed toenails with a gel colour make your feet look cared for straight away, whether you are in sandals for an event or a trip.

We only do nails, not foot spas or heel scrubbing. One gel colour on toenails starts at 250 baht, including trimming and shaping, base coat and top coat. If you have an open wound on your foot, or a thick, yellow toenail you suspect is fungal, let it heal first and then come in. See toenail colours our customers have chosen in the design gallery.

Before you buy the next jar of vitamins

Cracked heels do not mean your body is missing something. Most of the time your heels are simply telling you they are dry and carrying too much pressure. One jar of cream and one pair of socks can make them softer within a few weeks. But if the cracks come with other symptoms, or you have diabetes, see a doctor and get a clear answer. That is worth more than any jar of vitamins.

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