No, not that kind of depression. Carnivore, and low-carb generally, does in fact greatly alleviates, even completely reverses, what we normally think of the sundry dysfunctional mental states we lump together as depression. The depression of which I am speaking is the realization that the people of the modern world, and our friends and acquaintances specifically, are in so many cases enduring needless suffering from a wide variety of nasty "chronic" autoimmune diseases while not coincidentally puffing up the profits of big pharma and food. And there is very little, if anything, that we personally can do about it.
About all we can do is offer our own experiences as a model for possible emulation. Which is pretty weak tea, rhetorically speaking. The concepts of the "balanced diet", the inherent goodness of whole grains, fruit, and vegetables paradigm, and that saturated fat is bad for you, are so embedded in the public psyche that even if near death most people are unwilling to change to a meat based way of eating. Six decades of institutional, governmental and private, hostility towards animal products, red meat in particular, has seen to that.
That hostility is getting worse, not better, and is now clothed in the holy vestments of climate change, the histrionics of the "meat is murder" enthusiasts, and the relentless drumbeat of vegan fear-mongering. These malign influences get stronger by the day, and they extend from the WHO all the way down the nutritional and medical chain to your local doc. That is what is so appalling, frustrating, and yes depressing. Holding up one's own greatly improved health as an example cuts little ice in the face of such embedded, not to say adamantinely fossilized, hostility.
The carnivore way of eating is now "trending" on social media. Trending higher than keto in fact. What this portends is anyone's guess at this juncture, but a "tipping point" seems as far away as ever. Let's hope this trending lasts longer than most because one heck of a lot is riding on its long term success.
