In this solo video, Dr. David Perlmutter warns that the holiday season’s surge in added sugars and refined carbohydrates can provoke inflammatory processes that contribute to seasonal depression. He cites a recent University of Kansas study (reviewed on Technology Networks and published in the Journal of Medical Hypothesis) linking high sugar intake to gut microbiome alterations, glycation, and increased inflammatory markers, which are associated with depression severity. Perlmutter also highlights winter‑specific stressors—reduced sunlight, disrupted circadian rhythms, lower physical activity—that create a “perfect storm” for mood decline. He frames depression as an inflammatory disorder, sharing its commonality with Alzheimer’s, heart disease, type‑2 diabetes, and cancer. To mitigate these risks, he recommends aerobic and resistance exercise, yoga, outdoor exposure, sleep hygiene (limiting evening screens and caffeine), and stress reduction. He ties these actions to his new book BrainWash, describing how inflammation leads to a “disconnection syndrome” that impairs prefrontal‑cortex decision‑making. The video ends with a call to limit pro‑inflammatory holiday treats and prioritize anti‑inflammatory lifestyle habits.
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Well, hey everyone, Dr. David Perlmutter here. You know, around holiday time, there's certainly a temptation to kind of put aside our ideas about diet and nutrition because after all, it's the holidays. It's Christmas, it's Hanukkah, it's the New Year, it's whatever. And, you know, the truth of the matter is that our cells and our physiology kind of don't know the difference. They're not really actually following the calendar. An interesting study was published just recently, and I'm going to send you a link from Technology Networks on this. They reviewed this study, was done by psychologists at the University of Kansas, and they suggest that eating lots of sweets, eating added sugars, which is certainly something that so many people do around the holiday times because after all it is the holiday times, But they talk about how making these dietary choices can trigger various metabolic and inflammatory changes that we now recognize may underpin, to some degree, depression. And they recently published their work in the Journal of Medical Hypothesis. So, you know, they talk about the fact that there's a lot of stuff going on in the wintertime. Number one, we're probably less active. We're not outside as much. And in fact, we're not getting as much good sunshine as we would get during other months. So, you know, these create, as the authors described, a perfect storm of issues coming together. And, you know, what can you control? Well, you can exercise even though you may remain indoors, and you can absolutely redouble your efforts to control your diet. Why is sugar— why are these sweet treats that are so prevalent during the holidays such an issue? Well, we know that higher dietary sugar is a gateway to changing, for example, our gut bacteria and its metabolites, collectively called the microbiome, and this enhances the production of inflammation. We know that sugar itself binding to proteins, a process called glycation, also directly triggers the production of inflammatory chemicals. Why this matters is because there's a robust dataset these days that correlate higher levels of inflammation to risk and even severity of depression. So we really need to embrace the notion that depression is, to a significant degree, an inflammatory disorder, and as such, it joins the list of the other chronic degenerative conditions like Alzheimer's, coronary artery disease, diabetes type 2, and even cancer as being associated with inflammation, and as such explains why everything I just mentioned is also related to higher level of sugar consumption. Let me read to you a quote from Dr. Stefan Yardy from Kentucky, associate professor of clinical psychology, and he— rather Kansas, let me correct that. For many people, reduced sunlight exposure during the winter will throw off circadian rhythms, disrupting healthy sleep and pushing 5 to 10% of the population into a full-blown episode of clinical depression. So, you know, that speaks to the issue of our lack of sunshine during the winter months. And when we add to that this sudden bombardment of our physiology with higher levels of refined carbohydrates and sugar, It's no wonder that so many people experience the blues, or shall I say depression, during this part of the year. So, some tips then. Regain your commitment to aerobic exercise and strength training, resistance exercise as well. Consider yoga. I recently did a video blog on the benefits of yoga for the brain. We know that yoga is associated with decreased inflammation. Get outside even though it's winter. Being outside and exposed to nature also reduces inflammation. Pay attention to your sleep. Do everything you can to enhance your sleep by limiting your screen time in the evening, by cutting back on caffeine. In general, having your caffeine more in the morning, not having any caffeine, let's say, after 2 PM. And engaging in a recognition that the level of stress in your life may be also contributing to inflammation, and as such, may open the door to depression as well. So yeah, it's great that people bring over those platters of Christmas tree cookies and the gingerbread men and all those things that are, you know, you look upon and say, well, I should have those because it's the holidays. The reality is those are pro-inflammatory. Our mission, as we are talking about in our new book Brainwash, is to do everything we can to reduce inflammation And that will help offset what we describe in BrainWash as being disconnection syndrome, recognizing that these players help to disconnect us from that prefrontal cortex part of the brain, that part of the brain that allows us to make better decisions moving forward. Well, that's all for now. Thanks for listening. I'm Dr. David Perlmutter.
