With the sperm providing propulsion and the magnetic tetrapods their guidance system, the researchers see “sperm-hybrid micromotors” as offering intriguing advantages for chemo delivery over synthetic micromotors being developed by others. To start with, sperm’s ability to fuse with somatic cells protects medications from dilution and breakdown. Also, they can “swim through complex environments” due to their beating tails and membrane biochemistry that make the female reproductive system a comfortable environment. In addition, can last longer in the body since they’re less likely to be in conflict with the patient’s immune system due to proteins and prostasomes on sperm cells’ membranes.
Males: A number of factors may encourage an unhealthy focus on weight and body shape thus increasing the risk of developing disordered eating attitudes and behaviors. These include a sport-specific or coach sanctioned weight limit (., wrestling); judging criteria that emphasize muscular, lean, and stereotypically attractive body builds (., diving); team weigh-ins that emphasize size, weight, and muscularity; stereotypes regarding what the body build of a certain sport “should be”; performance demands that encourage a lean and muscular body; and peer pressure to either achieve a certain body shape (., muscular and defined) or to adopt pathogenic weight control behaviors (Petrie et al., 2007).