Fruit Juices

It’s a common practice to store fruit juices in vacuum flasks, but this habit can be detrimental to your health. While vacuum flasks are made with stainless steel, they are not suitable for highly acidic fruits like oranges and lemons. The acid can damage the inner lining of the flask, affecting its insulating properties, and potentially destroying the nutritional value of the fruit.

Traditional Chinese Medicine

Herbal medicines often contain corrosive substances that can damage the inner lining of vacuum flasks. Prolonged use of a flask for this purpose may have negative health effects and could even be toxic.

Tea

Brewing tea in a vacuum flask can lead to a significant loss of vitamins and nutrients. Additionally, it may release heavy metals that pose a risk to your health and well-being.

Milk

While it may be convenient, storing milk in a vacuum flask is not recommended. The proteins and other nutrients in milk can break down, increasing the risk of diarrhea.

By Minh Minh – Vietnamnet

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