Can 50-year-old wish health and longevity?

Of course. From the age point of view, 50 years old belongs to middle-aged people, who are most likely to get sick and have the most minor problems in all aspects. 50 years old is the key period of longevity, and 50 years old can wish you health and longevity. Health means that a person is in a good physical, mental and social state.