Lost weight - now I'm constantly hungry and tired
A few months ago, I had what I thought was a cold for an extended period of time, probably bordering on 4 weeks, since I work outside and didn't treat it properly at the time. The result is that I ended up losing about 30 pounds during that time, although I didn't realize the severity of my weight loss until later, as I didn't used to regularly weight myself.
About a month or so after that, I started feeling constant hunger pains and began putting back on some weight. However, months later, these hunger pains continue, even though I eat constantly throughout the day to try and alleviate them, and I'm back at a healthy weight for someone my height (5'11", 160 pounds). When I eat a large meal, I feel full on some level, as in I can't stomach another bite, but at a deeper level I continue to feel hunger pains, and am quickly hungry again within a couple of hours.
At times, the hunger is so acute that it wakes me up early in the morning, or interferes with my daily activities. I've also felt low energy throughout the day, as well as some erectile difficulties during this time. However, my doctor put me through a full battery of blood and urine tests and told me there were no abnormal results.
I assume all these problems are a result of my extreme weight loss during that earlier time period, but I'm not sure why I haven't been able to return to normal, given the balanced (and large) diet I've been trying to eat. Needless to say, this has caused a lot of aggravation in my life, which I'm sure isn't helping matters. Any help or insight you could provide would be greatly appreciated.