Quote by Sarah Ballantyne

““Meat from grass-fed and pasture-raised animals tends to be more nutrient-dense than conventional meat. Although the exact nutrient content will vary from species to species and from farm to farm (and by time of year and the quality of supplemental feed, if any), grass-fed and pasture-raised meat tends to be higher (sometimes much higher) in many minerals and vitamins while also having a better omega-6 to omega-3 fatty acid ratio. For example, grass-fed beef contains up to ten times more beta-carotene (a carotenoid—that is, an antioxidant and precursor of vitamin A; see here) as grain-fed beef and up to four times more vitamin E (see here). Grass-fed beef is also higher in B vitamins, zinc, iron, phosphorus, and potassium. And because pasture-raised animals hang out in the sun, their fat is a source of vitamin D (which is practically nonexistent in factory-farmed animals). Free-range chickens also have more vitamin E content and iron than conventional chickens. Grass-fed and pasture-raised meat tends to have a much lower water content than conventional meat and is much leaner overall (which means it has more protein!). Plus, its fats are much healthier. Grass-fed meat contains approximately four times more omega-3 fatty acids (in the very useful DHA and EPA forms; see here) as compared with grain-fed meat. It also contains far fewer omega-6 fatty acids, so the ratio of omega-6 to omega-3 fatty acids in grass-fed meat is typically within the optimal range at 3:1 (but can be as low as 4:1 and as high as 20:1 in grain-fed meat, varying by the exact diet of the cow but also the cut of meat). Meat (and dairy) from grass-fed cows is the best-known source of conjugated linoleic acid (CLA; see here). Grass-fed and pasture-raised meat also tends to be higher in oleic acid (see here). What About Bacon?””

— Sarah Ballantyne