DeepSeek 是这么否定你的说法的：

问:“People mentioned fat free milk needs chemical process and therefore not healthy”

DeepSeek：

You're referring to a common concern that fat-free (skim) milk undergoes more processing than whole milk, making it less "natural" or potentially less healthy. Let’s break this down:

How is Fat-Free Milk Made?

1. Skimming Process: Milk is spun in a centrifuge to separate the cream (fat) from the liquid.

2. No "Chemicals" Added: The fat removal itself is a mechanical process, not a chemical one.

3. Fortification: After skimming, some vitamins (like A and D, which are fat-soluble and lost with fat removal) may be added back.

Is Fat-Free Milk "Unhealthy" Due to Processing?

• No artificial chemicals are added to remove fat—just mechanical separation.

• Fortified vitamins (A & D) are the same ones naturally found in whole milk.

• Lactose and protein content remain unchanged.

Arguments Against Fat-Free Milk (From Critics)

• More processed than whole milk (though not necessarily harmful).

• May be less satisfying (since fat helps with satiety).

• Some studies suggest full-fat dairy might have metabolic benefits (though research is mixed).

Bottom Line:

• Fat-free milk isn’t "unhealthy" just because it’s processed—it’s still a good source of protein and calcium.

• Whole milk is less processed and may be better for those who prefer natural fats.

• Choose based on your diet:

  • If you need lower calories/saturated fat, fat-free is fine.

  • If you prefer minimally processed foods, whole milk may feel more "natural."