Problem: At 43 years old, Maria is navigating middle adulthood, a stage characterized by declines in muscle mass and bone density, as well as metabolic and hormonal changes (Author, Year). According to Erikson's theory of psychosocial development, this period involves the challenge of generativity versus stagnation, where individuals focus on contributing to society and supporting the next generation (Erikson, Year). Given the typical developments in this stage, Maria is likely experiencing signs of sarcopenia, which is the loss of muscle mass and function. She could also be experiencing potential weight gain, form lack of activity due to the muscle mass and bone density. Need Professional Help?