> We already phisically change completely every few years. That is not true at all. Please don't perpetuate these old wives' tales on HN. A lot of your cells

> We already phisically change completely every few years. That is not true at all. Please don't perpetuate these old wives' tales on HN. A lot of your cells do die and are replaced, sperm cells for example have a life span of 3 days, white blood cells about a year, but brain cells (especially relevant to the context of this thread) are with you for life.