When your pancreas doesn't make enough digestive juices, your body can't properly absorb vitamins A, D, E, and K from your food—so you might end up low on all of them at once.

When your pancreas doesn't make enough digestive enzymes, your body can't break down fats properly, so you can't absorb important vitamins like A, D, E, and K from your food — leading to deficiencies.

People with a long-term pancreas problem that stops it from digesting food properly often lack key vitamins like D, A, and E—more than half are low in vitamin D, which can happen because their body can’t absorb fats well.

If your pancreas isn't making enough digestive juices, taking vitamin D pills won't help because your body can't absorb the vitamin properly—it needs fat to soak it up, and your pancreas isn't helping with that.