FGF21 Hindbrain Neurons Controlled Protein Hunger TL;DR: During protein restriction, liver-derived FGF21 acted through glutamatergic beta-klotho neurons in the nucleus of the solitary tract to change food intake, food choice, and energy expenditure in mice. Key Findings NTS-KLB neurons responded directly: Klb-expressing glutamatergic neurons in the nucleus of the solitary tract were activated by FGF21. …
Early Stress Rewired the Gut’s Nerves, Not Just the Brain TL;DR: Early life stress produced lasting gut pain and motility changes through enteric and sympathetic nerve pathways, with pediatric cohort data pointing in the same direction. Key Findings Maternal separation produced gut hypersensitivity: The mouse model developed visceral pain sensitivity and lasting motility defects. Motility …
Low-Level Drinking Was Not Invisible to the Aging Cortex TL;DR: Even drinking within low-risk guidelines was linked to lower cortical blood flow and thinner cortex when lifetime exposure met advancing age. Key Findings All participants stayed under 60 drinks per month: The cohort excluded alcohol use disorder and focused on healthy non-smoking adults reporting low-level …
Lifetime Cognitive Enrichment Delayed Alzheimer’s Dementia TL;DR: In 1,939 Rush Memory and Aging Project participants, higher lifetime cognitive enrichment was linked to 38% lower Alzheimer’s dementia hazard and about 5 years later dementia onset. Key Findings 1,939 dementia-free adults: Participants were older adults from Northeastern Illinois in the Rush Memory and Aging Project, with a …
Mediterranean Diet Linked Mitochondrial Microproteins TL;DR: Mediterranean diet adherence tracked with higher mitochondrial microproteins Humanin and SHMOOSE in older adults, pointing to a possible mitochondrial route for healthy-aging benefits. Key Findings Higher adherence tracked with SHMOOSE: Patients with stronger Mediterranean diet adherence showed higher circulating SHMOOSE levels. Humanin moved with diet and Nox2: Humanin was …
Hormone Therapy Linked to 44% Improvement in Menopause Mood Symptoms TL;DR: Menopausal hormone therapy tracked with a 44.59% improvement in mood-symptom scores after about 107 days, across both peri- and postmenopausal women — and the gains were broadly similar regardless of which hormonal regimen was used. Key Findings 44.59% improvement in mood symptoms: After initiating …
The Hidden Postpartum Crisis Nobody Screens For: Paternal Depression Peaks at 10-12 Months TL;DR: Fathers experience a protective period early postpartum (depression drops by 26%), but depression and stress surge at months 10-11, creating a 30-36% elevated risk when no one is screening for it. Perinatal psychiatry has a crisis of attention. Mothers are screened …
When Depression Threatens Pregnancy: A 34% Elevated Miscarriage Risk TL;DR: Untreated depression increases miscarriage risk by 34% across nearly 9 million women, but antidepressants reduce that risk to 24%—meaning the medication is safer than the disease during pregnancy. For decades, obstetricians have asked the wrong question about depression in pregnancy. They worried: Is the antidepressant …
How Parasites Hack Your Gut-Brain Connection TL;DR: Parasitic infections trigger a sophisticated cellular conversation in the gut that signals the brain to stop eating—a protective response that reveals how infection hijacks the gut-brain axis through epithelial cell crosstalk, acetylcholine release, and serotonin signaling. When you’re fighting an infection, appetite disappears. It feels intuitive—your body’s way …
Krill Oil vs Fish Oil: Which Omega-3 Source Wins Against Inflammation and Oxidative Stress? TL;DR: Krill oil has a slight edge for inflammation due to astaxanthin, but fish oil wins for raising blood omega-3 levels and long-term cardiovascular outcomes. Fish oil has dominated the omega-3 supplement market for decades. But a smaller crustacean from Antarctic …
