Pork does contain vitamin D, and it’s one of the better meat sources. A standard 3-ounce cooked serving delivers anywhere from 15 to 46 IU depending on the cut, with fattier cuts like shoulder and Boston butt at the high end and lean tenderloin at the low end. That’s a modest but meaningful contribution toward the 600 IU daily recommendation for most adults.
How Much Vitamin D by Cut
Not all pork is created equal when it comes to vitamin D. According to the USDA nutrient database, here’s what you get from common cuts:
- Shoulder roast (3 oz cooked): 46 IU
- Whole loin (3 oz cooked): 45 IU
- Country-style ribs (3 oz cooked): 37 IU
- Ham, cured spiral slice (1 slice): 48 IU
- Sirloin roast (3 oz cooked): 25 IU
- Center rib roast (3 oz cooked): 20 IU
- Tenderloin (4 oz raw): 9 IU
- Ground pork, 96% lean (3 oz cooked): 6 IU
The pattern is clear: fattier, darker cuts carry more vitamin D. Shoulder and whole loin provide roughly 7 to 8 percent of your daily value per serving, while ultra-lean ground pork barely registers. Vitamin D is fat-soluble, so it concentrates in fattier tissue.
Why Some Pork Has More Than Others
The biggest factor isn’t the cut itself. It’s how the pig was raised. Just like humans, pigs produce vitamin D in their skin when exposed to sunlight. Most commercially raised pigs spend their lives indoors, which severely limits the vitamin D in their meat. A study published in PLOS One found that pigs given outdoor sun exposure had loin meat containing about 29 IU per 100 grams, compared to roughly 9 IU per 100 grams in conventionally raised indoor pigs. That’s more than three times the vitamin D from the same cut.
Pork also contains a pre-activated form of vitamin D (the same form your liver converts regular vitamin D into) that your body absorbs more efficiently. Research in the Journal of Nutritional Science found this form is two to five times more potent than standard vitamin D3 in humans. So the total vitamin D benefit of eating pork is likely higher than the raw IU numbers suggest, because your body can use this pre-activated form with less processing.
Lard Is Surprisingly Rich in Vitamin D
If you cook with lard from pasture-raised pigs, that’s a concentrated source. Lard from pigs with adequate sun exposure can contain around 1,000 IU per tablespoon, though this varies widely based on the animal’s diet and outdoor access. Lard from conventionally raised indoor pigs will contain far less. If you’re buying lard specifically for its vitamin D content, sourcing matters enormously.
Cooking Concentrates Vitamin D in Pork
Unlike some nutrients that break down with heat, vitamin D in pork actually becomes more concentrated when you cook it. A 2022 study in Food Chemistry found that cooking increased vitamin D3 concentrations by about 49 percent. This isn’t because heat creates new vitamin D. It’s because pork loses water and fat during cooking, which concentrates the vitamin D that remains. Retention rates exceeded 100 percent for nearly every cooking method tested, meaning virtually none of the vitamin D was destroyed.
Sous-vide cooking showed the highest retention at 135 percent, but roasting, grilling, and pan-frying all performed well. The researchers concluded that the type of pork product (fattier versus leaner) had a greater influence on final vitamin D content than the cooking method. So don’t stress about how you prepare it.
How Pork Compares to Other Vitamin D Sources
Pork is a solid land-animal source of vitamin D, but it can’t compete with the top-tier sources. Fatty fish like salmon delivers 400 to 600 IU per serving, and a tablespoon of cod liver oil provides over 1,300 IU. A cup of fortified milk typically adds about 120 IU. Pork shoulder at 46 IU per serving sits below these but above chicken and most beef, which contain very little vitamin D.
Where pork has a quiet advantage is in that pre-activated vitamin D form. Because your body can use it more efficiently, a serving of pork may contribute more to your vitamin D status than the IU count alone would predict. If you’re eating pork regularly as part of a varied diet, it adds up, especially if you’re choosing fattier cuts or pasture-raised products.