A salty way to enhance learning, memory, cognition and longevity: Hypertonic saline (10%Nacl) as learning/memory/cognitive/longevity-enhancer: Hypertonic saline (10%Nacl) increases Tissue inhibitor of metalloproteinases 2 (TIMP2) levels, improves cognition, and decreases age-associated decline in memory and learning, via down regulation of its target genes, 27/June/2018, 11.21 pm