It is, therefore, safe to conclude that multiple factors play different roles in ageing. Though right now the thing that we are concern about is the ever-increasing elderly people compared to the younger population.

Older adults are working longer. By 2014, 23 percent of men and about 15 percent of women ages 65 and older were in the labour force, and these levels are projected to rise further by 2022, to 27 percent for men and 20 percent for women.

It is important to ensure that we take every step there is to optimise the health of the general population so that chronic diseases related to the ageing process can be reduced:

Adult onset diabetes
Arthritis
Kidney and bladder problems
Dementia
Parkinson’s disease
Glaucoma
Lung disease
Cataracts
Osteoporosis
Enlarged prostate
Alzheimer’s disease
Macular degeneration
Depression
Cardiovascular disease

By the way, you should read/make a post about progeria. It is an interesting disorder that causes people to age prematurely.