A study published in the British Medical Journal, entitled “Perceived age as clinically useful biomarker of ageing: cohort study”, ventured to test the age-old clinical practice of using perceived age (how old individuals appear) in patients as part of the assessment of their health. The researchers followed 1,826 twins aged 70 and above in Denmark for a period of seven years. They found that perceived age worked as something along the lines of a ‘biological age’ and was strongly correlated with survival chances and physical and mental functioning. visit: http://www.bmj.com/content/339/bmj.b5262
Other research showing that perceived age is also significantly influenced by non-genetic factors. A study published in the Oxford Journals, entitled “Influence of environmental factors on facial ageing”, found that approximately 40% of the differences seen in individuals of low and high perceived age can be due to factors such as smoking, body mass index (high BMI is indicative of good health in the elderly), socioeconomic status and various other lifestyle elements such as marital status, number of children and being free of depression and illness.