Four out of five Irish people over the age of 50 are overweight or obese, according to a new study led by Trinity College Dublin.
The Irish Longitudinal Study on Ageing (TILDA), has released a report on a national study of over 8,000 people aged 50 or over. Close to four out of five over 50s also had an “increased” or “substantially increased” waist circumference. This means that just one fifth of the over 50s have a normal BMI or waist circumference.
The prevalence of obesity in men over 50 in Ireland is comparable with US men over 50 (while English rates are much lower). The prevalence of obesity in women over 50 in Ireland is lower than among comparable women in the US, and broadly similar to the prevalence among older English women.
The TILDA report highlights the increased health risks and health services burned given the higher rates of obesity. They report that obesity costs the Irish health system €1.3 billion a year.
Speaking about the findings, Dr Siobhan Leahy, TILDA Research Fellow and lead author of the report said, “The proportion of over 50s in Ireland who are overweight or obese is significantly higher than that of the general adult population in Ireland. While this age group is already more likely to be affected by age-related illness, frailty and cardiovascular disease, these conditions are exacerbated by the presence of obesity and significantly higher levels of disease and disability are evident in obese individuals. Our study highlights the combined impact of the obesity crisis and a rapidly aging population on health and health service demand.”
The key findings of the report are as follows:
- Based on body mass index (BMI) measurements, 36% of Irish over 50s are obese and a further 43% are overweight.
- Based on waist circumference measurements, 52% of Irish over 50s are ‘centrally obese’, i.e., with a ‘substantially increased’ waist circumference, while a further 25% have an ‘increased’ waist circumference.
- Using BMI as an indicator of obesity, a higher proportion of men (38%) are obese than women (33%); however, using waist circumference as an indicator of obesity, a higher proportion of women (56%) have a ‘substantially increased’ waist circumference than men (48%).
- There is a much stronger relationship between obesity and socioeconomic status for Irish women than for Irish men; for example, 39% of women in the lowest quintile of wealth are obese, in comparison to 24% of women in the highest wealth quintile.
- There are strong relationships between obesity, particularly central obesity, and cardiovascular diseases such as angina, heart failure and heart attack; 21% of centrally obese men report at least one cardiovascular disease compared to 14% of men with a normal waist circumference. Corresponding rates for women are 17% compared to 11%.
- Cardiovascular disease risk factors are more prevalent in those with central obesity. For example, 48% of those with central obesity report a doctor’s diagnosis of high blood pressure compared with 22% of those with a normal waist circumference. 11% of those with central obesity report a doctor’s diagnosis of diabetes in comparison with just 2.5% of those with a normal waist circumference.
- Chronic conditions such as arthritis are more common among obese individuals; for example, the prevalence of arthritis among obese women is 44%, compared with 25% of women with a normal weight.
- There is a clear relationship between obesity and objective measures of physical functioning in both men and women; for example, obese women walk over 10cm per second slower than normal weight women.
- The relationship between obesity and physical activity is stronger in women than men. 47% of obese women report ‘low’ levels of physical activity, indicating that they do not meet the recommended levels of physical activity, compared to 30% of normal weight women.
- Obese individuals visit their GP more frequently, take more medications, and a higher proportion report polypharmacy (i.e., concurrent use of five or more medications) than non-obese individuals.
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