After reaching a new underweight low and becoming scarily dysfunctional I finally started working on getting better, forcing myself to eat more and journaling my days/mood swing. This is how I noticed my mood always follows the same pattern after I eat:

* Initial burst of energy, feel happy and motivated!
* Motivation drops, don't feel like doing anything, start feeling depressed
* Energy drops, start feeling sleepy/tired (napping doesn't really help)
* Irritability sets in, I become very angry, snap at peoples
* Start feeling hungry again

What I realized, it's the same pattern regardless of what or how much I eat. Eating more only "extends" its duration before I feel hungry again, but still cycles through same emotions; I can go through the pattern in an hour or five hours depending on how much I ate.

I also noticed:
* What/how much i eat doesn't matter, it can extend the cycle from one to few hours, but it's always the same
* Tends to happen only mid day, I'm usually better in mornings/evenings (tho those have their own patterns too)
* Sometimes (but not always) I can switch moods almost instantly depending on circumstances (i.e. being distracted by friends tends to lessen the effect)

So I'm guessing a lot of it is in my head. It's very annoying and renders me so useless most of the day! Normally I used to mitigate the effects by later drinking coffee, a sugary drink, or just keeping snacking every fifteen minutes, but none of those seem like good solutions. It's almost like I can stay motivated/happy only as long as I keep eating/drinking.

(I also noticed snacking/drinking something sugary usually improves my mood shortly, but non-sugary stuff like, say nuts or water, doesn't, so I am worried it could also be an early onset of diabetes or something)

Did anyone else notice similar patterns? How I break out of this? Do I just keep going until I get hopefully better? Mediate? ugh