This post originally appeared on Pills to Paleo, my former website.

Since June of this year, I’ve completed two successful Whole30s, and I’m about to embark on another starting January 1st. Because I’m still trying to lose weight, and because I love how I feel when I’m eating Whole30, I still eat a clean, paleo-style diet when I’m not officially on the program. However, I do allow myself a few treats here and there — some dark chocolate, a few handfuls of homemade paleo granola, etc.

This Christmas, I decided to make some extra-special treats to take to a family gathering. These paleo salted caramel maple pecan pie bars from The Foodie Teen were divine (seriously one of the best desserts I’ve ever eaten). I also made some paleo apple cinnamon cookies from Living Healthy with Chocolate. The recipe flopped on me (I may have done something wrong), but I turned the mess into some pretty tasty bars.

I’m happy to say that I didn’t go crazy and eat the entire batch of both, BUT I had a seriously negative reaction to the sugar. This surprised me, since I’ve been able to tolerate dark chocolate and paleo granola, but the fact is, these treats contained WAY more sugar than I’m used to eating. Lesson learned? I can only indulge in a very small amount of sugar.

Please note: If you can tolerate sugar, I highly recommend both desserts. My reaction was an unfortunate side effect.

Sugar Symptoms

Anxiety: Immediately after taking a few bites of the bars, my heart started racing and my face flushed. I also experienced intense anxiety — something I haven’t felt very often since I went paleo six months ago. I felt panicky, feverish, and trapped. My mind was swirling with bad thoughts. You think I would have stopped after that, but I didn’t — I continued to eat the treats on Christmas Eve and Christmas Day. Yikes.

Sadness: My negative self-talk came back with a vengeance, and overall, I felt mopey, defeated, and sorry for myself. Before I went paleo, this was normal. Now, I realize just how awful I felt all the time.

Paranoia: This ties in with the anxiety and sadness. Essentially, I became convinced that everyone was harboring bad thoughts about me. Not fun.

Crankiness: My temper was short, I was snappy, and I didn’t feel like socializing. I managed to “hold it together” OK, but I’m sure my attitude was palpable. This is the opposite of how I would have liked to feel, especially given that I was surrounded by family.

Digestive upset: Though I didn’t eat anything “not paleo,” my stomach took a hit from the sugar. Gas, bloating, diarrhea, and stomach cramps put a damper on my holiday spirit.

Lesson Learned

While I am swearing off sugar for a while, I’m not swearing it off for good. Though I’m bummed I felt so crappy over the holidays, I’m happy that I learned more about my tolerance for sugar. After my January Whole30, I might indulge in a little dark chocolate, but I won’t go much farther than that.

I have to work harder than most people to maintain mental well-being and happiness. Is that a drag? Sometimes, yes. But most of the time, it isn’t. For so long, I had no idea how to fix the anxiety and depression that ruled my life. Now, I know that I can control about 70% of it by controlling what I put on my plate. It takes extra effort to eat clean, but the reward is HUGE.

I’ve got a slow cooker full of bone broth and lots of green veggies on hand. I know I’ll be feeling better within a day or so, and I’m thankful I know exactly how to get back on track.

What about you? Have you noticed a connection between sugar, anxiety, and depression? I’d love to hear your experiences!