Good capability for regeneration is the key to longevity and good health in any species.
Regeneration vs. Rejuvenation. (The differences are sometimes unclear.)
Rejuvenation = the rate of change in the formation of healthy new cells > (higher) than the mortality rate of similar cells. (In the same time unit) Therefore the tissue will rejuvenate!
- Such a condition is possible, but not forever, because otherwise, we will not die! Rejuvenation is measured at relative rates per time unit, while cell regeneration is an existing static feature.
- Slow aging refers to a higher cell renewal rate than the average age range. The result is usually a look younger than the chronological age.
- If we consistently maintain a fit lifestyle and nutrition – We age slower than our chronological age. Slow aging (rejuvenation) is probably the case for a minority population.
- People who age slower than their peers will probably be healthier older adults, but immortal lives are impossible!
- We age according to our chronological age. Neutral aging is probably the case for the majority of the population.
- We age more quickly than our chronological age.
- Unfortunately, Having fast regeneration and rejuvenation capabilities does not mean that we can escape death.
- Malnutrition in children (especially in underdeveloped countries) may lead to a cessation of tissue regeneration. The little food is channeled to the conservation of life energy.