Many factors play into how well a person can survive without food. For example, men typically have more muscle mass than women, and muscle burns more energy. So they may drain their calorie reserves faster if they go without food for longer periods. Women, on the other hand, tend to have more body fat, which can help them survive in starvation conditions slightly longer. Ultimately, both will experience the same effects of starvation if they don’t have access to food. The difference between length of time until death by starvation will be based more on other physical factors than gender.