Healthdirect Free Australian health advice you can count on.

Medical problem? Call 1800 022 222. If you need urgent medical help, call triple zero immediately

healthdirect Australia is a free service where you can talk to a nurse or doctor who can help you know what to do.

beginning of content

Zinc deficiency

6-minute read

Key facts

  • Zinc deficiency is when the body does not have enough of the mineral zinc for the body's essential functions.
  • Zinc deficiency can result in skin changes that look like eczema at first, but do not improve with moisturisers, steroid creams or lotions.
  • You may also experience symptoms including hair loss, more frequent infections, wounds that take a long time to heal and diarrhoea.
  • Zinc deficiency is usually caused by problems absorbing zinc from your diet, or by not consuming enough zinc in your diet.
  • Zinc supplements are used to treat a zinc deficiency and cause a rapid improvement in skin symptoms.

What is zinc?

Zinc is a mineral essential for many of the body's normal functions and systems, including:

  • the immune system
  • wound healing
  • blood clotting
  • thyroid function
  • senses of taste and smell

Zinc also supports normal growth and development during pregnancy, childhood and adolescence.

Read more on zinc and your health.

What is zinc deficiency?

Zinc deficiency is when the body does not have enough of the mineral zinc for the body's essential functions.

What are the symptoms of zinc deficiency?

Zinc deficiency can result in skin changes that look like eczema at first. There may be cracks and a 'glazed' (smooth or glassy) appearance on the skin. These changes may be noticed first around the mouth, nappy area and hands. The rash doesn't get better with moisturisers, steroid creams or lotions.

People with zinc deficiency may also have:

  • hair loss
  • skin and hair changes
  • eye problems
  • more infections than usual
  • wounds that take a long time to heal
  • loss of taste and smell
  • diarrhoea

Zinc deficiency can slow a child's growth, and delay them reaching sexual maturity (puberty).

What causes zinc deficiency?

Zinc deficiency is uncommon, but it can occur if people have medical problems that interfere with zinc absorption from their food, or if they don't have enough zinc in their diet.

Zinc deficiency can happen in people who have problems absorbing nutrients from food, for example, older people and those who have some gastrointestinal (gut) diseases. Some medicines can also increase the loss of zinc through urine.

Zinc from animal-based foods is better absorbed than from plant-based foods. This means that vegetarians and vegans, and people on other long-term restricted diets, may be at a higher risk of zinc deficiency.

Zinc is only found in low amounts in breastmilk, so babies who are exclusively breastfed longer than 6 months may also experience zinc deficiency.

Sometimes, newborn babies experience zinc deficiency if they are premature or very sick, or if their mothers had a mild zinc deficiency. Some people are born with zinc deficiency.

How is zinc deficiency diagnosed?

If you think you or child may have zinc deficiency, see your doctor. They may refer you for a blood test, although this is not very reliable for people with mild deficiency.

Often the best way of diagnosing zinc deficiency is to see if the symptoms improve with a zinc supplement. If you or your child have skin problems related to zinc deficiency, they should start to improve within 72 hours of taking a supplement.

FIND A HEALTH SERVICE — The Service Finder can help you find doctors, pharmacies, hospitals and other health services.

ASK YOUR DOCTOR — Preparing for an appointment? Use the Question Builder for general tips on what to ask your GP or specialist.

How is zinc deficiency treated?

If you have a diagnosed zinc deficiency, your doctor may recommend this is treated by taking a zinc supplement, usually in the form of a pill or capsule. Your doctor will recommend the right dose for you, depending on your symptoms. You can also get added zinc from some multivitamin supplements, or cold remedies that contain zinc.

It's important to follow your doctor's or pharmacist's recommendations, as having too much zinc can lead to side effects including diarrhoea or vomiting. It can also interfere with the absorption of other nutrients you need, such as copper and iron. You should not take more than 40mg of extra zinc a day, unless your doctor tells you to.

Can zinc deficiency be prevented?

The best way to avoid zinc deficiency for most people is to eat foods that are high in zinc especially dairy foods, poultry, meat and seafood. Zinc can also be found in cereals, legumes, nuts and seeds.

Find out how much zinc you need.

Resources and support

  • Visit Nutrition Australia for information about healthy eating.
  • Eat for Health uses the Australian dietary guidelines to provide advice about the amount and types of food you need.

Learn more here about the development and quality assurance of healthdirect content.

Last reviewed: June 2023

Back To Top

Need more information?

These trusted information partners have more on this topic.

Top results

ACD A-Z of Skin - Zinc Deficiency and the Skin

Zinc deficiency results in skin changes that can look like atopic dermatitis in the early stages.

Read more on Australasian College of Dermatologists website

Children, vitamins and minerals

Kids often don’t need vitamin or mineral supplements. Learn more about giving your child the vitamins and minerals they need through a balanced diet.

Read more on Pregnancy, Birth & Baby website

Zinc protoporphyrin | Pathology Tests Explained

The zinc protoporphyrin (ZPP) test is a blood test that can identify a disruption in the formation of haem. Haem is an essential component of haemoglobin, th

Read more on Pathology Tests Explained website

Vitamin and mineral (micronutrient) supplements

Here is what you need to know about the benefits for fertility and pregnancy health of folic acid, iodine, vitamin D, zinc, and selenium supplements.

Read more on Your Fertility website

Vitamin and mineral supplements: when are they needed? -

Vitamin and mineral supplements won't convert poor food choices into a healthy diet, but relevant quantities can address deficiencies at certain life stages.

Read more on myDr website

Iron intake for vegetarians -

Iron deficiency can be a nutritional problem for vegetarians, especially women. Find out about iron in food and how to enhance your iron absorption.

Read more on myDr website

Vitamins and minerals - Better Health Channel

Vitamins and minerals are organic compounds that are required in very small amounts, for a variety of metabolic processes.

Read more on Better Health Channel website

Iron studies | Pathology Tests Explained

Iron is needed to help form adequate numbers of normal red blood cells, which carry oxygen throughout the body. Iron is a critical part of haemoglobin, the p

Read more on Pathology Tests Explained website

Vitamins & minerals for kids & teens | Raising Children Network

Children need vitamins and minerals for health and development. They can get vitamins and minerals by eating a variety of foods from the five food groups.

Read more on website

Short bowel syndrome - Better Health Channel

A person with short bowel syndrome is likely to be deficient in a range of important nutrients.

Read more on Better Health Channel website

Healthdirect 24hr 7 days a week hotline

24 hour health advice you can count on

1800 022 222

Government Accredited with over 140 information partners

We are a government-funded service, providing quality, approved health information and advice

Australian Government, health department logo ACT Government logo New South Wales government, health department logo Northen Territory Government logo Queensland Government logo Government of South Australia, health department logo Tasmanian government logo Victorian government logo Government of Western Australia, health department logo

Healthdirect Australia acknowledges the Traditional Owners of Country throughout Australia and their continuing connection to land, sea and community. We pay our respects to the Traditional Owners and to Elders both past and present.