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What looks like burnout after 40 might be a deficiency in this nutrient
The Sunday Upgrade – A smarter, science-backed start to the week

This week’s highlights

Good Sunday,
Today, I got an update from a trusted source inside WellnessInDubai.com
Only 5% of people get enough daily fiber (25–38g/day). This is a dopamine issue, a hormonal issue, and a performance issue.
If you're bloated, foggy, or hungry 90 minutes after eating, it’s not your willpower.
It’s your gut.
And most of us are starving it without realizing.
This week, I’m breaking down the most overlooked protocol for brain energy, cholesterol control, and appetite regulation—one that 95% of high-performers are missing.
Let’s fix that.

95% of Americans are fiber deficient
Brain fog isn't always mental.
Often, it's microbial.
The culprits?
→ Underfed gut bacteria
→ Low short-chain fatty acid (SCFA) production
→ Blood sugar swings from fiber-poor meals
A 2025 review found that prebiotic fiber, especially from guar beans and resistant starch, directly improves satiety, gut regularity, and cognitive clarity.
If you’re noticing:
🧠 Mid-morning brain fog
🍽️ Constant hunger despite eating “clean”
💩 Irregular or bloated digestion
❤️ Creeping LDL or cholesterol markers
You’re likely running low on the metabolic MVP: prebiotic fiber.
The fix?
Stack these tools to feed your gut, flatten your cravings, and sharpen your brain.
Tool | Why It Works | How to Use |
---|---|---|
Organic prebiotic fiber (6g daily) | Feeds beneficial gut microbes, improves regularity, boosts SCFA production for brain health | Mix 1 scoop into coffee or water AM |
Sweet potato (cooled & reheated) | High in resistant starch = elite fuel for gut flora | ½–1 cup, post-lunch or post-training |
Fermented foods (kefir, kimchi, sauerkraut) | Adds diverse probiotic strains + enzymes for digestion | 2–3 tbsp with 1–2 meals/day |
Garlic / leeks / onions | Natural prebiotics that supercharge microbiome diversity | Rotate into stir-frys, soups, or salads |
Fasted walks (10–15 min) | Improves motility, vagus nerve tone, and digestion rhythm | Post-meal or early AM reset |

This supplement might reverse early cognitive decline
Mild memory issues in your 40s and 50s? It’s not just “getting older.”
A new study found that taking 1g of citicoline daily for 12 months:
→ Improved language, memory, and spatial skills
→ Reduced subjective confusion
→ Even reversed diagnosable mild cognitive impairment (MCI) in some participants
Here’s the power move:
Citicoline supports the brain by protecting cell membranes, modulating key neurotransmitters (like dopamine), and enhancing focus.
If you're experiencing:
Name recall issues
Slower decision-making
Fatigue from simple mental tasks
Citicoline may be your first line of defense.
Stack it with:
🧠 Creatine (5g)
🧠 Choline-rich foods (eggs, salmon)
🧠 Omega-3s for vascular protection
Think of it as brain insurance—especially if you’re over 40.


Vitamin D is your dopamine switch
Most people treat vitamin D like a seasonal immunity booster.
But here’s what they don’t realize:
Vitamin D is your brain’s ignition key.
A new study just confirmed that your dopamine-producing neurons literally can’t function without it.
Low vitamin D means low dopamine — the neurotransmitter that powers focus, motivation, memory, and mood.
If your D is deficient, expect:
→ Brain fog that doesn’t lift
→ Mood dips for no reason
→ Chronic fatigue or low drive
→ Higher risk of long-term cognitive issues (yes, even Parkinson’s)
This isn’t a “nice to have.”
It’s a non-negotiable for high performance.
Move | Why It Matters | How to Do It |
---|---|---|
🌞 Morning Sun (10–15 min) | Triggers skin-based vitamin D production + resets circadian rhythm | Get outside before screens |
🧪 Blood test (25-OH D) | Most people are insufficient, even with sun | Target 50–80 ng/mL for brain protection |
💊 D3 (4,000–5,000 IU) | Supports dopamine, testosterone, immunity | Take with fat + optional K2 stack |


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Closing thought
You don’t need another supplement.
You need a better foundation.
This week’s science was clear:
→ Fiber fuels your brain just as much as your gut
→ Dopamine depends on vitamin D, sleep, and screen discipline
→ Cognitive decline starts subtle—but compounds fast without intervention
So here’s your 3-part High-Performance Reset Protocol to stay sharp, lean, and unbreakable:
Stack Element | What It Does | How to Start |
---|
Prebiotic Fiber (6g) | Balances hunger, boosts gut-brain signaling, flattens cortisol | 1 scoop in AM coffee or water |
Citicoline (500–1,000mg) | Supports focus, memory, and brain resilience | Add to your morning stack or nootropic |
Vitamin D3 (4,000–5,000 IU) | Powers dopamine, sleep, and immune regulation | Pair with fat at breakfast, daily |
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References
Fiber Intake & Prebiotic Supplementation Knudsen MS. (2025). It’s Hard To Get Enough Prebiotic Fiber Without This In Your Diet. mindbodygreen. NIH (2018). Guar gum as a prebiotic fiber: Effects on microbiota composition and cholesterol metabolism. PMC6124841. USDA FoodData Central. (2024). Nutrient Profile: Oats, dry, rolled, regular. Entry 2346397.
Citicoline & Cognitive Decline Knudsen MS. (2025). This Neuroprotective Compound May Slow Cognitive Decline. mindbodygreen. Gareri P, et al. (2023). Citicoline in the Treatment of Cognitive Impairment: A Review of Clinical Data. Clinical Interventions in Aging. PMC10363355. Grieb P. (2014). Neuroprotective properties of citicoline: facts, doubts and unresolved issues. PMC3933742.
Sweet Potatoes & Midlife Hormone Support Schneider J. (2025). Why Sweet Potatoes Are A+ In Your 40s & 50s, From An Expert. mindbodygreen. Romm A, M.D. (2025). Hormone Intelligence & Nutritional Strategies for Perimenopause. mindbodygreen podcast archive.
Vitamin D & Dopamine Production Lidicker G. (2025). How Vitamin D Regulates The Role Of Dopamine In Brain Cells. mindbodygreen. Eyles DW, et al. (2025). Vitamin D signaling and the development of dopaminergic neurons in the brain. University of Queensland Brain Institute.
Forrest KY, Stuhldreher WL. (2011). Prevalence and correlates of vitamin D deficiency in U.S. adults. British Journal of Nutrition, 106(9), 1427–1434. Amen D, M.D. (2023). Symptoms of Low Dopamine and Nutritional Interventions. Amen Clinics – Clinical Notes.
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