Plasmalogen supplements from sea squirts boosted synapses and reversed memory loss plus hair graying in aged mice

Researchers supplemented aged mice with plasmalogens, lipids abundant in sea squirts that decline with human age and in Alzheimer's and Parkinson's. Using the Morris water maze, treated mice located the hidden platform significantly faster than controls, matching younger performance. Brain histology showed increased synapse number and improved morphology, indicating restored neural plasticity rather than simple neuroprotection.

The work extends prior observational links between low plasmalogens and neurodegeneration by demonstrating reversal of established deficits, not merely slowing progression. Visible hair regrowth in treated mice suggests systemic effects on stem-cell activity or oxidative stress, an outcome rarely quantified in cognitive-aging studies. This positions marine-derived plasmalogens as candidates for interventions targeting both brain and peripheral aging markers simultaneously.

No human pharmacokinetic or safety data exist yet; mouse doses cannot be extrapolated without controlled trials. The study design used small cohorts and short duration, limiting assessment of durability or side effects. Larger, longer rodent dose-response experiments followed by Phase I human testing would strengthen translational claims.