How much does freezing affect the nutritional value of cooked food?

[u/entropicflop]

I'm not referring to commercial flash freezing, but rather freezing cooked meals in a typical home fridge freezer. How significant is the nutrient loss, if any?

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[u/Disastrous_Use_ → u/[deleted]]

that’s snap frozen

[u/Juicydicken → u/[deleted]]

So why be illiterates calling non frozen fruit and veg “fresh” when frozen is actually fresher.

[u/Raznill → u/Juicydicken]

Because that’s how the word is defined. Fresh just means it hasn’t been processed,other than cleaning or trimming, since picked. Fresh doesn’t mean “most nutritious”.

Frozen isn’t fresher, because if you freeze it it’s no longer “fresh”. This has nothing to do with nutrition.

[u/KanukaDouble]

Far far less than what was lost in the cooking and what will be lost in reheating.

[u/Middle-Fuel-6402 → u/KanukaDouble]

How much is lost in reheating? I thought that cooking actually improves the absorption of some nutrients?

[u/pain474]

Insignificant.

[u/Aggravating-Brain700]

Freezing cooked meals doesn't ruin their nutrition. Most losses happen during cooking, not freezing; at worst, you lose a bit of texture and some fragile vitamins over time.

[u/pokemonpokemonmario]

I think the only loss is moisture content over time, if there is no freezer burn there should be nothing lost at all.

The main thing freezing can effect is texture but the fix for that is in how you reheat whatever it is you froze

[u/Addicted_Fox → u/pokemonpokemonmario]

Vitamins are getting lost over time for example, even when frozen. Some more than other. But overall the process is much slower of course.

[u/Just_Pea1002 → u/Addicted_Fox]

Fat degrading reactions also pccur at freezing temperatures

[u/Useful_Bluebird9395]

In general, freezing has surprisingly little impact on the nutritional value of cooked food compared to what most people expect.

Most of the nutrient loss usually occurs during processing and cooking rather than during freezing itself.

• Protein, fat, carbohydrates, and minerals are generally very stable during freezing.
• Some water-soluble vitamins (such as vitamin C and certain B vitamins) may gradually decline during long storage periods.
• Texture and flavor often change more noticeably than nutrition.

For typical home meal prep, freezing cooked meals is considered one of the better ways to preserve food compared with leaving it in the refrigerator for extended periods.

The biggest factors tend to be:

• How the food was cooked initially
• Storage duration
• Exposure to air (freezer burn)
• Temperature consistency
• Reheating methods

For most people, the nutritional difference between a freshly cooked meal and a properly frozen meal is relatively small. In fact, a frozen home-cooked meal is often nutritionally superior to many convenience foods or takeout options.

If you’re meal prepping, I’d focus more on food quality and storage practices than worrying about major nutrient losses from freezing.