Pepsi and Coke-fed mice have larger testicles.

The intake of carbonated beverages, particularly Pepsi and Coca-Cola, increased testicular growth and testosterone levels

Studies have revealed negative impacts of carbonated drinks on reproductive health

Another study revealed that the volume, count, and concentration of semen were all negatively impacted 

In addition to the anticipated weight gain, the studies revealed some unanticipated

First, all animals given Pepsi or Coca-Cola had higher serum testosterone levels

Because this increase in testicular size may be advantageous for human development