1) Middle Age: During the middle-aged years, preventive nutrition can promote wellness and help organ systems to function optimally throughout aging. Preventive nutrition is defined as dietary practices directed toward reducing disease and promoting health and well-being.

During this stage of the human life cycle, adults begin to experience the first outward signs of aging. Wrinkles begin to appear, joints ache after a highly active day, and body fat accumulates. There is also a loss of muscle tone and elasticity in the connective tissue. Many people in their late thirties and in their forties notice a decline in endurance, the onset of wear-and-tear injuries (such as osteoarthritis), and changes in the digestive system.

Ref: http://pressbooks-dev.oer.hawaii.edu/humannutrition/chapter/middle-age/#:~:text=During%20the%20middle%2Daged%20years%2C%20preventive%20nutrition%20can%20promote%20wellness,promoting%20health%20and%20well%2Dbeing.

2) Eating Well as You Age

Good nutrition can boost immunity, fight illness-causing toxins, keep weight in check, and reduce the risk of heart disease, stroke, high blood pressure, type-2 diabetes, bone loss, and cancer. Along with physical activity, a balanced diet can also contribute to enhanced independence as you age.

Ref: https://www.helpguide.org/articles/healthy-eating/eating-well-as-you-age.htm#:~:text=Good%20nutrition%20can%20boost%20immunity,enhanced%20independence%20as%20you%20age.