In the future, children in Thailand may no longer be able to be considered as the main support and caregivers for parents due to demographic changes. Low fertility and childlessness are now common. In Thailand family planning policies were launched in 1970 and its success affected the total fertility rate (TFR) which dropped from 6.3 in 1970 to 1.47 in 2005–2006.The fertility decline consequently affects family size which dropped from 5.7 in 1970 to 3.8 in 2000