Myostatin is a growth factor
that prevents muscles
from growing too large. It regulates muscle size from early development
onwards. Therefore if myostatin is absent, muscles are able to grow much larger.
Two specific breeds
have been bred to reap the benefits of its absence: Belgian Blue
. Selective breeding
was used with the more muscled cows, to produce larger offspring
Mice have also been genetically modified
to grow larger muscles, which has led to speculation on the feasibility
of myostatin inhibitors
for humans. The affected mice were on average
30% heavier than normal mice, and their muscles thee to four times larger.
boy is known to have a mutation which blocks production
of myostatin. At almost age five, he has muscles twice the size of his peers.
No doubt this could be very useful for military
applications, among others.
Now we need to find one for brain
development, and get governments to give newborns these drugs depending on their vocation