Genetic and behavioral risk factors for self-reported joint pain among a population-based sample of Swedish twins.

Self-reported joint pain, a typical manifestation of osteoarthritis, was examined using 335 twin pairs from the Swedish Adoption/Twin Study of Aging to estimate relative genetic and environmental influences on self-reported joint pain and to examine the relationships between joint pain, health behavior, and psychological variables. Findings suggest that family resemblance for self-reported joint pain represents similar environments more than genetic similarity. Data from the early 1970s, including exercise, physical activity at work, obesity, and neuroticism, were used to predict joint pain in 1993. For men, moderate amounts of exercise decreased the likelihood of joint pain, but strenuous amounts of physical activity in the workplace had the opposite effect. For women, exercise and physical activity were not significant predictors, but past obesity and higher levels of neuroticism increased the likelihood of reporting joint pain in 1993.     

Inheritance and the Family

Inherited wealth will be of increasing importance in years to come. Yet inheritance taxation is unpopular, and part of this unpopularity is due to family concerns. Such taxation is seen by many as morally problematic because it is taken to violate important family values. In this article, we explore five family arguments against inheritance taxation: firstly, whether we have a right to benefit our children; secondly, whether it is a virtue to benefit one's children; thirdly, whether children have a right to their parent's belongings, due to common ownership; fourthly, whether inheritance taxation may impair a vital sense of continuity and belonging; and lastly, an argument from incentives that appeals specifically to the relation between parents and children. We conclude that none of the arguments provide strong objections against a moderate or even a high inheritance tax rate, at least not when special provisions are made for things like family houses or farms. However, since the arguments all introduce concerns that should be assigned some weight, it would be unjust to abolish inheritance entirely.