Bleach penetrates the cuticle to oxidize and dissolve the natural melanin pigment inside the cortex. This leaves the interior of your hair hollow, porous, and highly fragile.

Sleeping with wet hair causes friction between your fragile, swollen strands and the pillowcase. It also creates a damp, warm environment that encourages fungal growth on your scalp.

Hello everyone I’m new to the group I’m currently in nursing school obtaining my LPN license at VERVE COLLEGE in oakbrook IL I am currently in NURSING 101 FUNDAMENTALS OF NURSING

The Hard Truth: Nephrons Are Permanent In the adult human kidney, nephrons—the microscopic filtering units—cannot be regenerated once lost. You are born with a fixed "nephron endowment" of about 1 million units per kidney, all formed before 36 weeks of gestation. No new ones are created after birth. What Can Be Repaired? While you cannot grow new nephrons, your kidney can repair parts of existing ones. Following an acute injury, surviving tubular epithelial cells can multiply and migrate to restore the damaged lining of the tubules. This helps restore some function, but it only patches up existing structures—it does not create new filtering units. Why Can't They Regenerate? - Developmental Shutdown: The molecular machinery required to build nephrons permanently turns off after birth. - Complex Architecture: A nephron requires precise coordination to connect a glomerulus (capillary tuft) to a highly specialized, multi-cell tubule. - No Stem Cells: Adult kidneys completely lack the necessary nephron progenitor cells (stem cells) to kickstart the process. The Consequences When nephrons die, they are replaced by non-functional scar tissue (fibrosis). This permanently reduces overall filtering capacity. The remaining healthy nephrons are forced to work harder to compensate, which ultimately accelerates the progression of chronic kidney disease. While scientists are actively researching stem-cell-derived structures and bioengineered substitutes, no current medical method can restore lost nephrons in humans.

Unless you have a rare genetic biotin deficiency or eat raw egg whites daily (which blocks biotin), a biotin supplement will not magically grow hair. Stop falling for marketing gimmicks.