The brain supplement market is enormous and largely unregulated, but a handful of compounds have genuine scientific support. We sort the evidence into tiers — strong, moderate, and weak — cover quality and safety concerns, and offer practical buying and dosing guidance.
Creatine isn’t just for building muscle. A growing body of research shows it can boost cognitive performance — especially in vegetarians, older adults, and anyone dealing with sleep deprivation or acute stress. We break down the evidence, dosing, and practical recommendations.
The carnivore diet — eating only animal products and eliminating all plant foods — has no published clinical trials examining its effects on cognitive function. Proponents cite ketosis, elimination of plant antinutrients, and nutrient density of animal foods as potential brain benefits. However, the diet also eliminates fiber, polyphenols, and prebiotic substrates that have substantial evidence supporting brain health through the gut-brain axis and antioxidant pathways. We assess what can be extrapolated from ketogenic diet research and elimination diet studies, and why anecdotal reports of mental clarity cannot substitute for controlled evidence.
Nutritional psychiatry is an emerging field with increasingly robust evidence that dietary patterns can meaningfully influence depression risk and symptom severity. The landmark SMILES trial demonstrated that a modified Mediterranean diet significantly reduced depressive symptoms compared to social support alone, and multiple large cohort studies confirm the association. This guide covers the key trials, biological mechanisms — including the gut-brain axis, neuroinflammation, and serotonin production — and provides a practical dietary framework for supporting mood alongside clinical treatment.
The DASH diet (Dietary Approaches to Stop Hypertension) was developed to reduce blood pressure, but its vascular benefits may extend to the brain. Observational studies link higher DASH adherence to slower cognitive decline and reduced dementia risk, though the evidence is less robust than for the Mediterranean diet. We review the hypertension-cognition connection, key DASH studies, the diet’s brain-relevant nutrients, and how it compares to Mediterranean and MIND approaches.
Chronic stress activates the HPA axis and elevates cortisol, which directly drives cravings for high-fat, high-sugar foods by amplifying reward signalling in the brain. While comfort food temporarily reduces the stress response, it creates a self-reinforcing cycle that promotes visceral fat accumulation, neuroinflammation, and measurable cognitive decline. This article examines the biological mechanisms behind stress eating, its consequences for brain health, and evidence-based nutritional and behavioural strategies for breaking the cycle.