Primary Research · 2015
Dietary fat increases vitamin D-3 absorption
Dawson-Hughes et al. · Journal of the Academy of Nutrition and Dietetics, 2015
Key finding
Monounsaturated-fat-rich meal increased vitamin D3 absorption by ~32% compared to low-fat meal.
Read the paper
Open on PubMedhttps://pubmed.ncbi.nlm.nih.gov/25441954/
Cited in 3 guides
Roundup
Best Vitamin D Supplements 2026: Ranked by Clinical Evidence
42% of adults are deficient. Learn which D3 form, dose, and brand actually raises blood levels — with cofactor guidance and lab-verified picks.
Guide
Supplement Timing Guide 2026 — Backed by Science
Learn which supplement timing rules genuinely affect absorption — fat-soluble vitamins, mineral conflicts, and what disrupts sleep. A practical, evidence-based guide.
Review
Vitamin D3 vs D2: The Science Behind the 87% Gap
D3 raises blood levels 87% more effectively than D2 — and your prescription vitamin D might be the inferior form. Here's what to know.
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