- 98% of atoms in the human body are replaced every year.
- Lungs are 6 weeks old
- Liver is 5 months old
- Taste buds: 10 days
- Heart age: 20 years
- Lungs: 2-3 weeks
- Skin: 2-4 weeks
- Bones: 10 years
- Nails: 6-10 months
- The fastest-changing component, says Dr. Aebersold, is water. It forms about 70% of the body, and about half the water molecules are replaced every eight days.
- Body's cells largely replace themselves every 7 to 10 years.
This is Dec 2017 and I weigh around 58 kg. Last year Dec 2016 I had the same weight. I had 2% (1.16 kg) left from last year, and I got new 56.84 kg in one year - which came from food, air we breathe, drinks etc.
