Salt for Babies: Do You Really Need to Avoid It?

One of the most common questions parents ask when starting solids is:

"Can my baby have salt?"

If you've spent any time researching infant nutrition, you've likely come across advice to avoid salt completely during your baby's first year. While this recommendation is well-intentioned, it has also created a lot of confusion and unnecessary anxiety for parents.

Should you be preparing completely separate meals for your baby? Is a pinch of salt in a homemade family dinner harmful? And why does everyone seem so worried about sodium?

At Odi, we're passionate about helping parents understand the science behind nutrition recommendations so they can make confident decisions without fear.

The truth is, sodium isn't something your baby should avoid altogether. In fact, it's an essential nutrient that plays a critical role in growth and development.

Let's dive in.

Salt vs Sodium: What's the Difference?

The terms "salt" and "sodium" are often used interchangeably, but they're not quite the same thing.

Sodium is a mineral that is essential for life. It helps regulate:

• Fluid balance

• Nerve transmission

• Muscle contractions

• Cellular communication

• Hydration

Salt is simply sodium combined with chloride (sodium chloride).

Your baby needs sodium every single day. Breast milk naturally contains sodium, and infant formula does too. This is an important reminder that sodium itself is not harmful—it's a nutrient required for healthy growth and development.

Why Are Babies Told to Limit Salt?

The concern comes from the fact that babies' kidneys are still developing during infancy.

Their kidneys are less efficient at regulating large amounts of sodium compared to older children and adults, which is why health professionals recommend avoiding foods that are heavily salted or highly processed during the first year.

This is sensible advice.

However, somewhere along the way, the message shifted from:

"Avoid excessive sodium from processed foods"

to

"Babies should never eat salt."

These are very different messages.

Are Sodium Recommendations Being Misunderstood?

One of the most interesting points raised by maternal and infant nutrition researcher Lily Nichols is that the sodium recommendations for infants are often misunderstood.

The figures commonly quoted for babies are based on what researchers estimate babies consume from breast milk and complementary foods. These numbers are called an Adequate Intake (AI).

An Adequate Intake is not the same as a strict upper limit.

In other words, these recommendations were not designed to suggest that slightly exceeding them is automatically harmful. Rather, they represent an estimate of what appears sufficient for healthy growth and development.

For many parents, this distinction can help remove some of the fear surrounding sodium.

Babies Need More Than Breast Milk After Six Months

By around six months, babies begin transitioning from an exclusively milk-based diet to one that includes complementary foods.

This is important because nutritional needs increase rapidly during this stage of development.

Iron is the perfect example.

Around six months, breast milk alone can no longer meet a baby's iron requirements, which is why iron-rich foods become so important.

The same principle applies to other nutrients, including sodium.

As babies begin eating family foods, naturally occurring sodium from whole foods contributes to their overall intake.

This is a normal and expected part of the transition to solids.

The Bigger Concern: Processed Foods

When parents hear "avoid salt," they often focus on the pinch of salt added while cooking dinner.

In reality, that's rarely the biggest source of sodium in a child's diet.

The majority of sodium in modern diets comes from highly processed foods such as:

• Processed meats

• Fast food

• Instant noodles

• Chips and crackers

• Commercial sauces

• Packaged snack foods

• Convenience meals

A homemade family meal made from whole ingredients is nutritionally very different from a processed food designed to have a long shelf life.

At Odi, we believe this distinction matters.

The goal isn't to create fear around home cooking.

The goal is to minimise ultra-processed foods and focus on nutrient-dense ingredients.

Can Babies Eat Family Meals?

Absolutely.

Sharing family meals is one of the most powerful ways to support healthy eating habits.

It exposes babies to a variety of flavours, textures and eating experiences while reducing the stress of preparing multiple meals.

If you've added a small amount of salt while cooking a family meal, there is generally no need to panic or prepare an entirely separate dinner.

Instead, focus on:

• Prioritising whole foods

• Offering a wide variety of ingredients

• Limiting highly processed foods

• Avoiding obviously salty foods such as processed meats and takeaway meals

Nutrition is about the overall pattern of eating, not a single ingredient in isolation.

Sodium Naturally Occurs in Many Healthy Foods

Another misconception is that sodium only comes from added salt.

In reality, many nutrient-dense foods naturally contain sodium, including:

• Meat

• Seafood

• Eggs

• Dairy products

• Some vegetables

These foods have nourished humans for generations and provide many other nutrients essential for growth and development.

When babies begin eating whole foods, sodium intake naturally increases—and that's entirely normal.

Flavour Matters Too

One aspect of feeding that is often overlooked is flavour development.

Infancy is a critical period for shaping food preferences.

Babies learn what food tastes like through repeated exposure.

This doesn't mean babies need heavily salted foods, but it does mean they benefit from experiencing a variety of flavours through real food.

Think:

• Garlic

• Herbs

• Ginger

• Bone broth

• Citrus

• Spices

• Slow-cooked meats

• Vegetables prepared in family meals

A diverse flavour experience helps children develop broader palates and a positive relationship with food.

Food should be nourishing and enjoyable.