Am I missing important vitamins or minerals?

Smaller meals leave less room for nutritional freeloaders. When your appetite shrinks, the variety in those meals matters more.

That doesn’t mean every tired afternoon is a deficiency or that you need a blood test for everything in the periodic table. It means taking a practical look at what you’re consistently eating, what you’re avoiding, and any symptoms or medical history that change the picture.

Vitamin D makes a good example

A 1988 sunlight experiment found a longer winter period without vitamin D precursor production in skin samples in Edmonton than in Boston. Latitude and season affect the opportunity for skin production; they don’t tell us an individual’s blood level, diet, or supplement needs.

That’s the interesting part behind the “37th parallel” conversation. It’s a geographic clue, not a personal prescription—and deliberately seeking unprotected UV exposure is not the answer.

Work from your situation

If your diet has become very limited, a dietitian can help make smaller meals do more. Tell your clinician about persistent fatigue, weakness, numbness, or other new symptoms rather than selecting a vitamin from the symptom alone. Depending on your history, they may recommend targeted tests and treatment.

For vitamin D specifically, NIH explains that both inadequate and excessive intake can create problems. More testing and bigger doses are not automatically better care.

Think of supplements as tools with a job description. “I take this because…” should end with something more specific than “the internet got very excited about it.”

Where D + K2 fits on my shelf

I carry Thorne Vitamin D + K2 Liquid for people who have a reason to supplement and prefer drops. It is not a permission slip to keep adding vitamin D on top of everything else. Check your multivitamin, too.

Vitamin K deserves a medication check: NIH notes its important interaction with warfarin. Discuss changes with your prescriber. The question is “does this fit my plan?”—not “how many good-sounding nutrients can I fit in the cupboard?” I sell this product; choosing no supplement is still a valid outcome.

Sources checked September 19, 2026. Product discussion updated September 21, 2026. General education; your own care plan comes from your clinician.