PEP/NEWS — Peptide intel. Daily.

In this video, Dr. Rena Malik explains what research actually says about penis size, including the true average length, why most men overestimate what’s normal, and whether length or girth really matters for sexual satisfaction. She also br

Ido Portal is a world-renowned movement coach who has developed specific practices anyone can use to greatly evolve their mental and physical health, and even gain clearer self-understanding. We discuss the effects of playful movement versu

Too much HIF-1α (a protein that normally helps cells adapt to low oxygen) triggers unwanted blood vessel growth inside cartilage. That vascular invasion destroys joint tissue and drives osteoarthritis — a finding with clear implications for recovery peptide research.

A new review in Aging Cell shows how senescent cells drive excess blood vessel growth around tumors. The authors map the link between cellular senescence, the SASP (the inflammatory signals senescent cells release), and tumor support.

Researchers found that RNA-DNA hybrids stuck in the cytoplasm of aging cells signal the cell to release inflammatory compounds. The finding helps explain why senescent cells make the whole body more inflamed over time.

After sleep deprivation, levels of SV2A (a marker of how many active synapses exist in the brain) rise significantly. The finding supports the idea that sleep actively clears out excess synaptic connections — and that skipping it lets them accumulate.

NeuroAge Therapeutics is running a structured six-month contest where participants are tested on a clinical-grade aging panel at baseline and again at six months. Baseline kits are shipping now.

A study in Aging Cell shows that certain antioxidants can selectively remove senescent cells in muscle tissue by altering mTOR signaling — the same pathway that governs cell growth and survival. The mechanism may expand the senolytic toolkit.

A new network-driven study scanned existing approved drugs for targets that overlap with aging hallmarks. Several candidates emerged that hit more than one pathway — raising the possibility of repurposing without starting from scratch.

Muscle-targeted delivery of FGF21 (a metabolic hormone) via viral vector extended median lifespan by 20% in male mice. The treatment also improved multiple healthspan markers — and it was given late in life, not early.

Fight Aging! has compiled a reference list of interventions with published evidence for reducing epigenetic age in humans. The list spans lifestyle, pharmaceutical, and emerging biological approaches — useful context for anyone tracking longevity biomarkers.

Part two of the Research Vials cancer series dives into how tumors spread and how they disable the body's own brakes on growth. The piece then profiles the first set of peptides studied in this context, with a focus on mechanism rather than therapy.

A large meta-analysis tested DNA methylation clocks across 17 tissue types and found meaningful variation in how well each clock tracks biological age by tissue. The work refines which clocks are trustworthy for which organs.