I'm outside 2-3 hours daily. I don't use sunblock unless it's really hot and I'm actually usually working with plants and under no screening. I drink 3 glasses of 1% milk daily (sometimes only 2). I eat a healthy diet but my vitamin D levels are low.
I also have 2 small tumors on my thyroid. I am supposed to be on 50mcg of synthroid but stopped taking it as I didn't find it helped anything. This was only recently.
I can't seem to lose weight although I work out 3x a week and walk at least 2 miles daily (in the mall if it's raining). I keep gaining and the synthroid they claimed would stop that but it didn't. I also get dizzy, am tired and often confused. Latest symptom is I get fuzzy vision that just goes away and also sometimes an aura in my vision. I see an endo and no help. I've seen a neuro and after tons of tests all they see is too mutch white matter and my brain is older than my age (45). He just prescribed vitamins COQ10, B and wants me to get a spinal tap which I don't like the idea of at all. He agrees my memory loss is there but no conclusive reasons. He basically sent me on my way after telling me take more vitamins....
I just don't like taking supplements and can't understand why my body isn't getting the D. I realize it may be the cause of some of my symptoms now although the endo or primary should have told me this.
I would suggest you also post this on the Thyroid board here where you will receive excellent advice. If you have tumors you may have Hashimotos. Many of your symptoms sound thyroid related; if so, you really need to get that under control. It often takes awhile to do this, so if you didn't see any results right away, and you stopped your meds, this may be the reason, or they (the meds) needed to be adjusted, which is common with hypothyroidism. This is where posting your thyroid labs at the thryoid board will help. Hypo can also cause Vitamin D absorbing issues.
Drinking a few glasses of vit D fortified milk alone won't raise Vit D levels appreciably. You'd need 10-20 glasses per day to see a difference. You don't say what your levels are so "low" can mean a lot of things. My wife's Vit D level is 30 ng/ml and that was with some sun exposure and no dairy products. That's on the low side of normal imo. This summer she's getting more sun and will have her levels checked in early September. Crohn's disease is just one auto-immune disease that can interfere with digestive vit D absorption. The solution in those cases is more UV exposure. As far as losing weight, the metabolism has to be revved up by eating more of the right foods, in the right combinations. A lot of people try to lose weight by skimping on breakfast and lunch and actually derail their efforts.