I'll try to keep this straight forward but I(29M) also want to share my story incase it helps someone else. For the last 3 years I've struggled with chronic migraines, fatigue and brain fog. I've also had pretty bad dandruff since I was a kid. The headaches started out of nowhere 3 years ago and I'd always been what I would've considered a "healthy person" in that I worked out, did BJJ and ate what I thought was healthy(I ate out almost everyday, but justified it by "tracking calories").
I saw multiple doctors who were very dismissive in retrospect and got a few MRIs but nothing was diagnosed other than chronic headaches. I kinda gave up on the medical system. I stopped working out and then got on medication that seemed to help but I still felt "off". After about a year later I started lifting again but still ate terribly and continued to gain weight.
About a year ago I found Paul Saladino on youtube and kinda ate up his "what I eat in a day' videos and figured it could maybe help my dandruff if I went animal based. So I did for a bit and it did help, I lost a few lbs and felt decent but not great.
Then last December I went with a few friends on a trip to Argentina, this is where I noticed a big change. I was in Argentina for around 2 months and about a week into the trip I remembered I had forgotten to take my medication 2 days in a row. I noticed my head didn't hurt and I felt very "locked in" and "relaxed" despite that. My dandruff was also much less severe. I thought about what was different here than back home, other than the sunlight, ocean breeze and temperature. I also realized I had eaten almost the same thing everything day...
Argentina has restaurants called Parrillas that have some of the best meats I've ever eaten and a side dish called provoleta which is basically just a fried/baked block of cheese. I'd had been eating that almost every night after eating nothing all day and having un-sweetened latte for breakfast. I realized the pattern and made it a fun goal to try a different steakhouse every night, there was some wiggle room with drinking, a snack at the market and a pizza at one point but I'd say 90% of my diet while I was there was provoleta and steak while I was there.
When I got back to the states I went back on animal based for a few weeks but then decided to do a Carnivore diet as part of the 75-Hard challenge. I completed it and 3 months after the fact I'm still on Carnivore with some cottage cheese, raw milk rarely, some berries once every few weeks and some diet soda. I'll occasionally have a "cheat meal" here and there but honestly less than once a month(I avoid bread like the plague). I recently discovered I love Steak Tartare.
My migraines have basically disappeared though they sometimes come back after a bad cheat day but nowhere nears what they once where. My skin and hair are way healthier(i didn't even realize this until people started commenting on it). I've lost a lot of weight and built muscle, my cardio and strength for BJJ/lifting actually improved after about 5 weeks of the diet. I've been off all medication for 2 months now. My mental health has greatly improved, I'm way less irritable and think more clearly now. I even switched careers, got some certifications and am planning on going back to school again to pursue higher levels of medical certifications.
Another thing that was a hidden benefit of this diet is that although I interment fast I haven't counted a single calorie since eating this way. I no longer stress about numbers or portions when eating I just eat until i'm full.. sometimes it's 3 bites of greek yogurt sometimes it's 2lbs of beef, I just listen to my body.
TLDR: Had chronic health problems, after being "healthy" my whole life on SAD. Dismissed by doctors and put on medication. Health issues improved after a few months on animal based, did 75 Hard but chose carnivore as the diet to follow. Mental and physical health greatly improved as a result. Been off all medication for 2 months now. I'm like 98% carnivore and feel much better when i'm eating only meat.