I felt GREAT for the first 3-4 months and since feel tired, sluggish, my nails are ridged, brittle and thin, I have occasional stomach issues.... What the heck??
How's your sleep? How much Vitamin D are you taking?
I'm going to agree with many other posts here and recommend that you try upping your fat and carbs. And maybe ditch the fruit for a while. Try some starchy carbs like yams/sweet potatoes, root vegetables, etc. Take a week off from your exercise routine, focus on getting some good sleep (8+ hours a night in a pitch-black room), add in some more fats and starches, and see how you do.
I agree with Korion that you might need to up your carbs. Also you listed some symptoms of hypothyroid, might want to have a panel done and see if you need to add some selenium and iodine. Some vit K might help with the nails as well.
Some other helpful info would be: what a typical day of food looks like; exercise routine; and supplement regimen.
It's possible you just need to rest. It is winter after all. Are you finding it harder to keep up all your exercise? Clearly if things haven't really changed and you felt great for several months then there's not likely to be anything fundamentally wrong with your diet. It can often be helpful just to change things though. More fat or carbs, some kind of feast isn't going to kill you once every few months and can make all the difference if you've been slightly undereating for your activity levels for 6 months.
Paleo-wise, are you making use of bones and organs and extra fat and skin? There's meat and then there's meat.
Natural fruit isn't going to be causing as big of an issue as this. Most paleo types who complain about fruit say it's because it makes them fat. That doesn't sound to be your problem. I got very ill from low carb plus lots of aerobic exercise. If you are having stomach problems you shouldn't be drinking lots of water. It's not natural and can actually be dehydrating. My constipation got better when I (among other things) stopped drinking 2-3 quarts of water. Don't be afraid of trying things other than standard issue paleo, it's better to feel good and eat a little unorthodox than try to stick to the rules and be frustrated with your health.
Stress is one of the most important issues that is rarely addressed. YES, you can nurture your body with the right food for humans, which you are doing, but if you are stressed, and your cortisol levels are elevated, it's going to throw off everything else! And if you have "body image" issues, it too, can have a very negative effect - I believe, (IMO everyone), that these issues contribute to the creation of Hashimoto's Thyroiditis (an auto-immune disease, where your body is attacking your thyroid gland, and you can exhibit symptoms of Hyper AND Hypo thyroid)and adrenal exhaustion.
My suggestion would be - make sure you are being kind to YOURSELF! Have compassion, and understanding that it takes your body a while to turn around and change. Deal with frustration by working on patience. Do Heartfelt Stress Relief (you can see how I help people with HeartMath), get in the sun; get grounded, laugh, and relax. I KNOW that will help- even if you do have thyroid or adrenal problems. Best of luck- we're here to support you!
You already have many good suggestions in the other responses.
I'd add, think back to when you felt so good. Are you really eating the same mix of foods now? I tend to change or rotate my foods over time and try new ones.
If you identify foods you've since added or left out, consider whether you've accidentally created any imbalances or deficiencies.
I like Melissa's suggestion to type your menus into a tracking database to assess your recent nutrition. I think the most frequent mistake made is to eat too few foods--while that can work great in the short term, it can create areas of malnutrition over time. That's why others pointed out you need offal and bones in addition to muscle meat, leafy greens and tubers and modest amounts of whole fruit.
Hope this turns around for you.
I agree with the previous posters. You simply may not be eating enough to keep up with your activity levels. Do you cook your meats and vegetables in coconut oil? That could help, so could pouring a little olive oil over them after cooking. Are you sure you can handle even the small amount of dairy in your coffee? Some of us can and some cannot.
I often have to remind myself to eat more. I often tend to eat fewer vegetables than are optimal if I don't pay close attention.
Good luck, pamela
Tired Legs, no cardio endurance 6 Answers
Exam Week & Starting Paleo 7 Answers
Why am I so tired?! 9 Answers