The freezing process itself can lead to some nutrient loss. When food is frozen, the water inside it forms ice crystals, which can damage the cell structure.
This can lead to a loss of some water-soluble vitamins, such as vitamin C and certain B vitamins.
The longer food is stored in the freezer, the greater the potential for nutrient degradation.
Over time, even when properly stored, the quality and nutritional content of frozen foods can decline.
The packaging of frozen foods is critical. If not sealed properly, there's a risk of moisture loss, which can affect the texture and nutritional value of the food.
Freezer burn is a common issue caused by inadequate packaging, and it can lead to taste and nutrient loss.
The way you cook frozen foods can also impact their nutritional value.
Steaming, microwaving, or sautéing frozen vegetables is often a better choice than boiling, which can cause nutrient leaching into the cooking water.
Many frozen foods, such as ready-made meals and frozen pizzas, can be high in added sodium, preservatives, and unhealthy fats.
These ingredients may contribute to long-term health concerns, even if the core ingredients maintain their nutritional value.