We often talk about how food affects the body—energy levels, digestion, inflammation. But what about the mind? Increasingly, researchers are looking at how certain foods can influence not just our mood, but deeper, more complex emotional states. One surprising area of study is the connection between diet and feelings of existential dread—that vague, unsettling sense of unease, purposelessness, or anxiety about the nature of life itself.
While existential dread can arise from many sources, a growing body of evidence suggests that what we eat can either soothe or exacerbate these feelings. Below, we explore three types of foods that, according to research, may trigger or intensify existential dread.
1. High-Caffeine Energy Drinks
The link between caffeine and anxiety is well-documented, but the relationship between energy drinks and existential dread is more nuanced. Energy drinks deliver a concentrated dose of caffeine and other stimulants like taurine and guarana. This combination can spike cortisol and adrenaline, putting the body into a low-level fight-or-flight state. For some individuals, this physiological arousal is misinterpreted by the brain as a genuine threat, leading to racing thoughts, a sense of impending doom, and a feeling that something is fundamentally wrong—a hallmark of existential dread.
A 2019 study in the journal Depression and Anxiety found that young adults who consumed high-caffeine energy drinks reported significantly higher levels of psychological distress, including feelings of hopelessness and meaninglessness, compared to non-consumers. The researchers suggest that the abrupt crash following the stimulant peak may also trigger a depressive dip, further coloring one's outlook with dread.
What to try instead: If you're sensitive to caffeine, consider green tea or matcha. They contain L-theanine, an amino acid that promotes calm alertness without the spike-and-crash cycle.
2. Ultra-Processed Foods and Artificial Sweeteners
The term "ultra-processed" covers a wide range of packaged snacks, sodas, and convenience meals stripped of fiber and nutrients and loaded with additives. Research increasingly links these foods not just to poor physical health, but to a decline in mental well-being. A 2022 study in Public Health Nutrition found that people who ate the most ultra-processed foods were 51% more likely to report frequent feelings of depression and anxiety. But beyond simple sadness, participants described a specific sense of emotional numbness and existential emptiness—a feeling of being disconnected from life.
Artificial sweeteners, often found in diet sodas and sugar-free products, may be a key culprit. Some research suggests they disrupt the gut microbiome, which plays a critical role in producing neurotransmitters like serotonin—the brain's primary mood regulator. When this gut-brain axis is out of balance, feelings of malaise and existential doubt can surface.
What the science says about the microbiome and dread
An imbalance in gut bacteria has been linked to increased inflammation and a higher risk of depressive symptoms. Since the gut produces about 90% of the body's serotonin, a diet high in artificial additives may starve the brain of what it needs to feel stable and purposeful. Participants in one 2021 clinical trial noted that after switching from a high-processed diet to a whole-food diet for just three weeks, their feelings of dread and hopelessness diminished considerably.
3. Social Media Content and Emotional Eating Triggers
This is not a food per se, but the pairing of certain foods—especially sugary, high-carb snacks—with social media consumption can create a perfect storm for existential dread. When we eat a sugary treat and simultaneously scroll through curated, often unrealistic portrayals of others' lives, the combination can amplify feelings of inadequacy and existential panic. The sugar rush provides a temporary mood lift, followed by a crash that leaves the brain vulnerable to the negative social comparisons we just consumed.
A 2023 study in Computers in Human Behavior found that individuals who frequently ate sweets while using social media reported higher levels of "existential anxiety"—defined as worry about the meaning and value of one's own life. The researchers hypothesize that sugar-induced blood glucose fluctuations impair the prefrontal cortex's ability to regulate emotional responses, making the existential sting of social comparison hit harder.
A practical shift: If you tend to reach for ice cream or cookies while scrolling, try a short walk or a glass of water before snacking. This pause can break the emotional cycle.
How to find relief without overhauling your entire diet
Recognizing that certain foods may contribute to existential dread is not meant to create fear or guilt around eating. Instead, it's an invitation to observe how your body and mind respond. A few small shifts can have an outsize impact:
- Swap energy drinks for green tea or sparkling water. The reduction in caffeine spikes can calm the nervous system.
- Replace one daily ultra-processed snack with a whole food. A handful of almonds or an apple with peanut butter can stabilize mood.
- Eat mindfully, away from screens. This allows the brain to register satiety and enjoyment, reducing the emotional crash afterward.
No single food causes existential dread on its own, but dietary patterns—especially those high in stimulants, artificial additives, and refined sugars—may create the biochemical and psychological conditions that make dread more likely. If these feelings persist, speaking with a mental health professional or a registered dietitian can provide personalized guidance.
