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Neurofibrillary tangles are pathological, entangled structures in the cytoplasm of neuron cell bodies, dendrites, and axons (Metaxas and Kempf, 2016)

One randomized, double-blind, placebo-controlled trial supplementing with l-carnitine for twenty-four weeks alone did not affect muscle strength in healthy aged women but seems to improve muscle mass in elderly patients aged between 90-and 100 years old, as well as help to improve mental fatigue

Phospholipid quality matters most, sunflower or soy lecithin are common ones to look for

A randomized controlled clinical trial of growth hormone in amyotrophic lateral sclerosis: clinical, neuroimaging, and hormonal results

Vitamin B12 injections are meant to correct or prevent deficiency, not to act as a general stimulant