Why do kids become picky eaters?

10 reasons why your child is a picky eater

A Dietitians explanation of all the factors that are likely influencing your child's relationship with food. Remember, a childs behaviour is a form of communication. Are you listening?

#1 It's a normal developmental stage

Between about 18 months and 6 years, many children naturally become more cautious around food.

From an evolutionary perspective, this likely protected young children from eating potentially harmful plants once they became mobile.

You'll often notice:

Refusing foods they previously enjoyed
Preferring familiar foods
Hesitating to try anything new

This is called food neophobia (fear of new foods), and is actually very common. As kids grow, they also develop more complex ability to analyse their world. Their tastes develop, and this is responsive to the household foods. More access to variety and diversity is key!

Helpful Hint: Show your child how safe the food is by learning about the food using their five senses, before eating it.

#2 Sensory sensitivities

Many children experience foods much more intensely than adults.

They may be sensitive to:

Texture
Smell
Colour
Temperature
Mixed foods
Crunchiness
Softness

For example:

A child may happily eat raw carrots but refuse cooked carrots because the texture feels completely different.

Or they may eat strawberries but refuse jam because it's too sticky.

For some children—particularly those with autism, ADHD, or sensory processing differences—these sensitivities can be especially pronounced.

#3 Appetite naturally slows

Parents often compare toddlers with babies. Babies grow rapidly and eat frequently. After age one:

Growth slows
Energy needs reduce
Appetite naturally fluctuates

Parents often interpret this as: "They've stopped eating."

When in reality: They're simply eating what their body needs.

Helpful Hint: if you want to know what your child should be eating, check out this link:

https://www.food-doods.com/for-parents/resources

#4 Children want independence

Food is one of the first things children can control. If they can't choose:

bedtime
clothes
where they go

They can choose: "I'm not eating that."

This isn't usually manipulation. It's normal development.

When does this most often happen? Ever heard of “the terrible two's?” When kids discover the power of the word no, things start to get more complicated.

Helpful Hint: When kids demonstrate this need for control, give them perceived control with binary choices. You give them two options, they decide which option.

#5 Pressure makes it worse

This is one of the biggest factors I see clinically, is when parents put real or even subtle pressure on their child to comply with a directive. Even the way a parent responds to a childs behaviour can create pressure, and they are good at reading body language.

When parents understandably become worried, they may start saying:

"Just one bite."
"Eat your vegetables."
"You'll get dessert if you finish."

Unfortunately, pressure often increases anxiety around food. The result? The child becomes even less willing to try new foods.

Helpful Hint: Stop making eating the goal. If a child is unable to touch a food, they are miles from putting it in their mouth. Set smaller goals that involve activities. Instead of touching the food, can you break it in two? Instead of tasting the food, what does it’s smell remind you of?

#6 Limited food exposures

Children often need to interact with a food many times before accepting it.

Research suggests it can take 10–15 or more neutral exposures before some children willingly taste a new food.

Many parents understandably stop offering a food after just a few refusals, meaning children never get enough opportunities to become familiar with it. As adults, we forget how difficult it can be to like new foods. Things are always easier if you’ve done them for decades.

Helpful Hint:

Focus on exposures like:

food sitting in our personal space (on plate)
looking closely at the food
moving food with utensils
touching food with fingers/hand
smelling the food
listening to any sounds you can cause the food to make (squishing, cracking, popping)
touching the food to the chin, nose, lips etc
biting and spitting out a food for fun.

#7 Learned associations

Children remember experiences. If they once:

gagged
vomited
choked
felt sick

after eating a food, they may avoid it for months or even years.

Their brain is trying to protect them. These are all perfectly natural self-defence mechanisms that our body relies on.

This is where the slow, gradual sensory based food exposures can be really helpful. Imagine choking on a peanut, then having someone telling you to eat a handful of peanuts the next day, and everything will be fine. This situation is one of the drivers of ARFID (Avoidant, Restrictive Food Intake Disorder), which we’ll cover in #10 of this article.

Helpful Hint: Focus on exposures that are super easy to achieve, and with nil risk of the previous outcome occurring.

#8 Genetics

Some children are naturally more cautious than others.

Research suggests genetics influence:

taste sensitivity
temperament
willingness to try new experiences
sensitivity to bitter flavours

This helps explain why siblings raised in the same home can have very different eating behaviours.

Also, foods consumed by the mother during the perinatal period can influence a child’s food tolerances and preferences.

Helpful Hint: If you’re planning to have a child, eat the most diverse range of foods that you can from a few months before conception, right through to transitioning to solids. You will literally be passing on flavour tolerance to your child.

#9 Medical factors

Sometimes picky eating has an underlying medical cause.

Dietitians call them nutrition impact symptoms. Examples include:

constipation
diarrhoea
reflux
food allergies
enlarged tonsils
oral motor difficulties
swallowing difficulties
iron deficiency
anxiety
medication side effects
poor sleep habits
breathing difficulties

These should always be considered, particularly if eating has become painful or growth is affected.

Helpful Hint: Dietitians are the best clinicians available to investigate these complex factors.

#10 ARFID (Avoidant/Restrictive Food Intake Disorder)

For some children, picky eating goes beyond a developmental phase.

ARFID is a recognised eating disorder where food restriction leads to significant nutritional, social, or growth consequences.

Children with ARFID may avoid foods because of:

sensory characteristics
fear of choking or vomiting
lack of interest in eating

These children need specialized support from health professionals, which can include Dietitians, Psychologists, Speech and Language Therapists, and Occupational Therapists.

Helpful Hint: If you suspect your child has ARFID, look for a Dietitian with experience in eating disorders and working with children, a General Practice Doctor, or a Paediatrician to assist with assessment and recommendations.

Key message

My Most Important Message for Parents is that one of the biggest misconceptions is:

"My child is choosing to be difficult."

In reality, your child is using behaviour to attempt to communicate a message that is often difficult to understand or interpret. A more helpful way to think about it is:

"My child is finding eating difficult."

That shift changes everything.

When parents understand why their child is refusing food, they can respond with strategies that build confidence instead of creating conflict.

We parent based on our own experiences as a child, and what we have learned through our lives. When two parents are present, you’re combining two different approaches. Kids thrive on consistency, so collaboration is very important in delivering the best outcomes.

Children aren't born loving every food—they learn through repeated, positive experiences.

Bottom line: Help is here!

Sometimes understanding the cause of problem is half the battle. Once you can identify that, the solutions are generally more manageable.

Implementing solutions can require some trial and error, and even with the best intentions, parents can try too hard and cause further problems.

If you’re short on ideas, check out our free ebook: A Dietitian’s Guide to Stop Picky Eating.

It’s available by subscribing to the Food Doods community at:

https://www.food-doods.com/subscribe

You will also receive the rest of the Food Doods Adventure Starter Pack, including a range of coloring sheets, food games, activity sheets and mealtime placemats.

Thanks for reading, and stay tuned for more!

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