You can supplement many of the things grain-fed cattle has. Of course, Iād argue itās best to buy better quality food whenever possible regardless of what way you eat, keto or not, as food quality has a huge impact on health.
That said, from a purely biochemical perspective, while the Omega 3 profile in grass-fed beef is better to regular beef (the main benefit health wise, though there are others) that can be supplemented. Most deficiencies in nutrition can be supplemented, which is why rarely are there people who are iodine deficient, have scurvy, or beriberi in modern America. And yes, itās always better to get it from food, however, that begs the question:
Is it ideal to supplement versus naturally ingest? Ehhh. You can throw science back and forth on that for a while.
In the end macronutrient choice matters the most. If you can eat high quality food, go for it, however what macronutrients you consume are far more vital for overall health. The rest is optimizing. Thatās not bad, certainly, and if I made more money I would absolutely eat all grass-fed all the time. However, whether or not it actually adds years to your life is another question, entirely, and one we are unable to answer as we have no data. We can only make inferences from existing data sets about related issues.