What is one complicating factor regarding radiosensitivity among individuals of the same species?

Genetic differences among individuals of the same species significantly influence radiosensitivity. These inherent variations can lead to differences in how individuals respond to radiation exposure. For instance, some individuals may have genetic mutations that affect DNA repair mechanisms, making them either more susceptible to radiation damage or better equipped to repair it. Certain gene variants can also affect cellular growth and division rates, which play a crucial role in an organism's sensitivity to radiation. As a result, even within a single species, genetic diversity can lead to varied outcomes in radiosensitivity, making this factor particularly important in understanding radiation effects on health.

While age differences can affect radiosensitivity due to developmental stages and cell proliferation rates, they are not as fundamental as genetic factors. Environmental exposure can contribute to overall health and genetic expression but does not inherently change an individual’s genetic capacity for radiosensitivity. Dietary habits can influence overall health but again do not modify the inherent genetic predisposition that determines how radiosensitive an individual might be.