1. Why is researching human sexuality significant, and how the findings have transformed the world of sex and improved sexual heath? 2. Discuss one age-related change that can be prevented or...

1. Why is researching human sexuality significant, and how the findings have transformed the world of sex and improved sexual heath?

2. Discuss one age-related change that can be prevented or slowed, explaining how lifestyle or diet modifications can impact this age related change.

Expert Answers
thanatassa eNotes educator| Certified Educator

For your first question, research concerning human sexuality can help us have healthier lives, free of fear and prejudice. Perhaps the most important area of research has to do with sexually transmitted diseases and their prevention. It is not enough to know about the medical aspects of the diseases; it is also important to understand and address cultural issues, such as prostitution, beliefs about childbearing, sexual superstitions, and beliefs about masculinity to understand how these diseases are spread and what interventions are most effective in reducing them. Simply knowing, for example, that condoms help prevent the spread of certain diseases is important, but to actually prevent the spread of STDs, one must persuade people to use protection and get tested; both of these things require understanding people's attitudes towards sexuality. 

Another important issue in sexual research is understanding sexual diversity as something normal. Both historical and contemporary studies suggest that a certain percentage of human (and even some animal) populations are homosexual and that a small percentage of people are born as intersex or transgender. Being gay doesn't seem to be a "choice" but something that is normal and hardwired into a certain percentage of the population. This research has been part of a larger movement to end homophobia, prejudice, and bullying, and it is essential to the push toward full acceptance and civil rights for the LBGTQ community. 

One the separate question of age-related changes, one can discuss age-related loss of strength and muscle mass, technically termed "sarcopenia". While a certain degree of loss is inevitable, it can be minimized in two ways. First, a regular program of resistance training will maintain or even increase muscle mass. Second, older people seem to absorb protein less efficiently than younger ones, and thus while doing resistance training should consume at least 75 grams of protein a day.