Healthy ageing has become a global priority to add quality to our later years and reduce the morbidity associated with ageing. Entering older adulthood, however, increases the risk of frailty and sarcopenia — key factors driving age-related morbidity. Frailty is a multi-system impairment associated with increased vulnerability to stressors. Sarcopenia is the loss of muscle mass and function and is a major component of frailty. Skeletal muscle has a reduced response to stimuli such as protein intake and exercise with advancing age, driving the gradual loss in muscle mass seen in older adults. High protein diets, especially when paired with resistance exercise, can help to overcome this anabolic resistance and restore or maintain physical robustness. The commonly cited protein requirements for adults published by the Department of Health (DH) underestimate the needs of older adults. Other nutritional factors, such as weight loss and vitamin D status, also play important modulating roles in frailty and sarcopenia.