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June 12, 2026 — FxNutrition Intelligence
Evidence-driven intelligence for functional nutrition practitioners
A Nutrishify publication • Week of June 12, 2026
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Ultra-processed foods are raising cognitive impairment risk by 14%—and the effect is strongest in adults under 60, not the elderly. That flips the usual framing on brain health timing. Also this week: a Cochrane review of 16 trials clarifies exactly what B12 supplementation does (and doesn’t) do for children. Plus: cholesterol, sleep, hormones, and skin from five strong podcast conversations.
One more thing: I’m away next week. Fresh issue returns June 26th. See you then!
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Evidence Spotlight
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Ultra-Processed Foods & Cognition
High ultra-processed food (UPF) intake was associated with a 14% higher risk of cognitive impairment across eight large prospective cohort studies—but the association was statistically significant only in adults under 60, not in those over 60. That age pattern shifts where the conversation about diet and brain health may be most relevant.
This meta-analysis pooled data from more than 250,000 adults. UPF intake was classified using the NOVA system. The pooled hazard ratio was 1.14 (95% CI 1.04–1.25) overall; in adults under 60, the hazard ratio rose to 1.19 (95% CI 1.06–1.33). The association did not reach statistical significance in those over 60. Estimates remained stable in larger studies and those with more than 15 years of follow-up. The study is observational with moderate heterogeneity (I² = 64.6%), so causality cannot be established.
Takeaway: This age-stratified finding adds to the evidence that midlife dietary patterns—not only late-life ones—may be the more relevant window for diet-based cognitive risk, particularly when discussing food quality with clients in their 40s and 50s.
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Vitamin B12 in Children: What It Does
Worth noting for practitioners working with pediatric clients on plant-forward or restricted diets: B12 supplementation reliably corrects deficiency and raises blood levels in children under 12—but this Cochrane review found little to no effect on height, cognitive function, motor development, or anaemia.
This systematic review included 16 randomized controlled trials (RCTs) in 4,083 children aged 2 days to 11 years across 10 countries. Doses ranged from 0.9 to 150 µg/day; follow-up ranged from five weeks to 31 months. High-certainty evidence confirmed that B12 supplementation reduced deficiency rates (risk ratio 0.27), and moderate-certainty evidence showed an average increase of 68.5 pmol/L in B12 concentrations. Effects on growth, cognition, and development were absent regardless of whether B12 was given alone or combined with other micronutrients. GRADE certainty was low to very low for those developmental outcomes, which limits how firmly the null findings can be interpreted.
Takeaway: Supplementing to correct a documented deficiency is strongly supported by this evidence; supplementing to enhance development in children who are already replete is not supported by this body of trials.
Read study → The Cochrane Database of Systematic Reviews, June 2, 2026
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MIND Diet & Preclinical Alzheimer’s
In adults aged 55–75 with preclinical Alzheimer’s disease (AD), plant-rich eating patterns consistent with the MIND diet—more vegetables and nuts, fewer processed foods—were associated with better cognitive outcomes. The association was stronger when combined with mentally stimulating activities.
This Spanish case-control study compared 50 adults with preclinical AD to 48 cognitively healthy controls. A methodological standout: researchers validated self-reported diet using urinary polyphenol metabolites—including anthocyanins, stilbenes, and gut-derived flavan-3-ol breakdown products—via targeted mass spectrometry, adding an objective layer that most dietary studies lack. The small sample size and case-control design limit causal conclusions.
Takeaway: The finding that diet and cognitive engagement together showed a stronger association than diet alone adds to the evidence supporting an integrated lifestyle approach when working with clients concerned about brain health. The urinary metabolomics method is also worth watching as a more objective diet-assessment tool in future research.
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By The Numbers
250,000+
adults pooled across 8 prospective cohorts found high ultra-processed food intake raised cognitive impairment risk by 14%—and by 19% in those under 60.
Most brain health research focuses on older adults, but this meta-analysis found the association between ultra-processed food (UPF) intake and cognitive impairment was statistically significant only in those under 60 (hazard ratio 1.19, 95% CI 1.06–1.33). The effect disappeared in adults over 60, suggesting midlife diet quality may be the more critical window. Estimates were stable across larger studies and longer follow-ups of more than 15 years.
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Clinical Pearl
B12 supplements correct deficiency—but may not boost growth or cognition
A Cochrane review of 16 randomized controlled trials (4,083 children) found B12 supplementation reliably reduced deficiency (high-certainty evidence) and raised B12 concentrations by an average of 68.5 pmol/L (moderate-certainty). However, the review found little to no effect on height, cognitive function, motor development, or anaemia. Supplementing to correct a documented deficiency is well-supported; using B12 to enhance cognition or growth in children who are already replete is not supported by this body of trials.
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Recent Podcasts
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Brain lipidology: understanding APOE, cholesterol homeostasis, Alzheimer’s disease risk, and the effects of lipid-lowering therapies on brain health
The Peter Attia Drive • June 8, 2026
A strong listen if you work with clients asking about cholesterol medications, APOE testing, or long-term dementia prevention. Dr. Peter Attia and lipidologist Dr. Tom Dayspring unpack how cholesterol transport in the brain differs from the rest of the body, how apolipoprotein E (APOE) genotype shapes Alzheimer’s risk, and what the evidence actually says about statins, ezetimibe, omega-3s, and cholesteryl ester transfer protein (CETP) inhibitors in the context of brain health. The conversation goes well beyond standard lipid management. Listen →
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Eating for Better Sleep & Foods that Improve Metabolic Health
Huberman Lab • June 8, 2026
Useful if you want a research-grounded framework for weaving sleep quality into nutrition conversations. Dr. Andrew Huberman interviews Dr. Marie-Pierre St-Onge, a nutritional medicine researcher at Columbia, on the two-way relationship between diet and sleep. The episode covers how sleep loss affects appetite hormones, how meal timing and dietary patterns—including Mediterranean and DASH approaches—relate to sleep quality, and specific foods and nutrients including fiber, saturated fat, kefir, ginger, and medium-chain triglycerides (MCTs) in the context of metabolic health. Listen →
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Root-Cause Protocols for PMS & PMDD: Test Markers, Lifestyle & Supplementation
The DUTCH Podcast • June 9, 2026
Worth a listen if you see clients with cycle-related mood symptoms and want a more structured testing and intake framework. Dr. Saru Bala, ND joins host Dr. Jaclyn Smeaton to discuss why premenstrual syndrome (PMS) and premenstrual dysphoric disorder (PMDD) are often mislabeled as anxiety or depression, and how the luteal phase can serve as a window into a client’s broader nutritional and lifestyle status. The episode walks through hormone-nervous system connections, relevant testing markers, and supplementation and lifestyle considerations from an integrative standpoint. Listen →
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Adult Acne, Hormones, and Perimenopause: What Your Skin Is Trying to Tell You
The Root Cause Medicine Podcast • June 11, 2026
A good resource if perimenopausal clients are raising skin concerns alongside other hormone-related symptoms. Dr. Kate Kresge speaks with dermatologist Dr. Mamina Turegano about adult acne in the context of perimenopause, covering androgen and hormone shifts, the role of glycemic patterns and dairy, and evidence-informed supplements including zinc, vitamin D, and omega-3s. The conversation bridges dermatology and nutrition in a practical way. Listen →
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33: What Actually Moves Your Cholesterol (And Why It’s Probably Not Saturated Fat)
Mornings with Megan • June 10, 2026
Helpful context for practitioners navigating cholesterol conversations where population-level guidelines don’t map neatly onto individual clients. Certified Nutrition Specialist Megan Pfiffner digs into individual response variability to saturated fat restriction—drawing on data showing low-density lipoprotein cholesterol (LDL-C) changes ranging from 54-point drops to 30-point rises from the same dietary intervention—and compares the cholesterol-lowering impact of saturated fat reduction against options like psyllium, oat beta-glucan, and statins. The episode also touches on why the replacement nutrient matters and how the GET-READI trial hit an LDL target while raising lipoprotein(a). Listen →
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Mark Your Calendar
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June 16
Mitochondria Through the Lens of the Gut–Heart–Brain Axis
Free virtual live session — Personalized Lifestyle Medicine Institute (PLMI) — Register →
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June 17
PMDD & the DUTCH Test: Understanding Neurotransmitters, Stress & Inflammation
Free one-hour live webinar, 12:00–1:00 p.m. PT — Precision Analytical (DUTCH Test) — Register →
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June 17
Beta Glucan and Gut Health: A Clinical Deep Dive with Dr. Jocelyn Strand
Free clinical webinar • 2:00 p.m. ET — BWH Labs — Register →
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June 25
Slowing Down Fast Food: The Metabolic Gap GLP-1s Can’t Reach & the Mechanism That Finally Closes It
Free webinar • 3:00 p.m. ET — Dr. Kara Fitzgerald with Dr. Sanjay Bhojraj and Dr. Eric Johnston on post-meal metabolic stress, SiPore® enzyme entrapment, and clinical integration for prediabetes, weight management, and GLP-1 transitions — Register →
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Tech Tip
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Spot Food Log Patterns in Seconds
Last week we covered de-identifying client notes before using AI. Here’s where that habit pays off.
Once you have a clean, de-identified food log, paste it in with this prompt:
“My client is working on [goal]. Here is their food log from this week: [paste log]. Identify any patterns — timing, food combinations, missing nutrients, or habits — that might be worth discussing. Don’t give advice. Just flag what you notice.”
You still bring the clinical interpretation. The AI just does the first pass — surfacing what might take 10 minutes of close reading in about 10 seconds. Works with any platform, any log format.
The decisions are yours. You know your client’s full picture — their history, their constraints, their goals, what they’re ready to hear. You decide which patterns matter, how to frame the conversation, and what to prioritize. AI is a spotter. You’re the expert clinician.
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