>>3347231>I'm lactose intolerant and don't eat many(if any) eggsThere are plenty of other foods with iodine in them. PLENTY. Eggs and dairy products just happen to be staples of American diets.
>I have every symptom of iodine deficiency listed, although who doesn't when they check WebMD or similarThere are plenty of other things that have identical symptoms. Hell, lack of proper sleep and malnutrition practically tick the same marks. If there's an enlarged squishy bump around and just above your adam's apple, then you might have something. But all the other symptoms are too vague to identify.
>is it reasonable to believe that taking an iodine supplement and trying to cut an amount of salt from my diet would help me feel more energeticI think supplements are garbage. A governer of my state is the reason why the supplement market in the U.S. isn't regulated by the FDA. There are plenty of nutrition resources for you to look at online. One of which is
examine.com. It's fantastic and cuts out all the bullshit "facts" being fed to you by food industries. Look up something and it'll give you peer-reviewed articles regarding positive, negative, or no effects from that thing. I'd seriously suggest you spend one or two days of serious homework on nutrition (4+ hours). Figure out what you need per day, per week. Then create a spreadsheet to track your stuff or use fitness apps (usually have food dietary information preloaded). Don't forget exercise.
The only supplement I'd suggest at the moment is vitamin D. Especially since you're in the northern hemisphere. If you're not spending much time outside, start popping the necessary vitamin D values. That'll help with the "winter blues." It's one of the few supplements that has been shown to actually provide beneficial results to those deficient in vitamin D.