http://www.medicalnewstoday.com/articles/282409.php

“Young blood” trials are under way to test treatment of alzheimers.

Proteins in young blood are believed to have rejuvenative properties in older subjects. The young blood (plasma) is being harvested I believe from males under 30.

We go through a process at about age 6-13 where our Baby Teeth (primary teeth) are replaced. Are there proteins in the blood at age 6 that could be responsible for this?

“The first baby teeth to fall out are typically the two bottom front teeth (lower central incisors) and the two top front teeth (upper central incisors), followed by the lateral incisors, molars and canines. Molars typically fall out between ages 9 and 12 and are replaced by permanent teeth by about age 13.”  http://www.mayoclinic.org/healthy-living/childrens-health/expert-answers/baby-teeth/faq-20058532