A study links life-changing religious experiences, like being born again, with atrophy in the hippocampus
The article, “Religious factors and hippocampal atrophy in late life,” by Amy Owen and colleagues at Duke University represents an important advance in our growing understanding of the relationship between the brain and religion. The study, published March 30 in PLoS One, showed greater atrophy in the hippocampus in individuals who identify with specific religious groups as well as those with no religious affiliation. It is a surprising result, given that many prior studies have shown religion to have potentially beneficial effects on brain function, anxiety, and depression.
A number of studies have evaluated the acute effects of religious practices, such as meditation and prayer, on the human brain. A smaller number of studies have evaluated the longer term effects of religion on the brain. Such studies, like the present one, have focused on differences in brain volume or brain function in those people heavily engaged in meditation or spiritual practices compared to those who are not. And an even fewer number of studies have explored the longitudinal effects of doing meditation or spiritual practices by evaluating subjects at two different time points.
In this study, Owen et al. used MRI to measure the volume of the hippocampus, a central structure of the limbic system that is involved in emotion as well as in memory formation. They evaluated the MRIs of 268 men and women aged 58 and over, who were originally recruited for the NeuroCognitive Outcomes of Depression in the Elderly study, but who also answered several questions regarding their religious beliefs and affiliation. The study by Owen et al. is unique in that it focuses specifically on religious individuals compared to non-religious individuals. This study also broke down these individuals into those who are born again or who have had life-changing religious experiences.
The results showed significantly greater hippocampal atrophy in individuals reporting a life-changing religious experience. In addition, they found significantly greater hippocampal atrophy among born-again Protestants, Catholics, and those with no religious affiliation, compared with Protestants not identifying as born-again.
Read the whole story in Scientific American
The Tax Policy Center looked into the revenue loss associated with House Budget Chairman Paul Ryan’s plan to cut the tax code down to two rates of 10 percent and 25 percent. They estimate the changes would raise $31.1 trillion over 10 years, or 15.4 percent of GDP. That’s $10 trillion less than the tax code would raise if the Bush tax cuts were allowed to expire, and $4.6 trillion less than it would raise if all of the Bush tax cuts were extended.
The Republican conressman says he’ll “broaden the tax base to maintain revenue...consistent with historical norms of 18 to 19 percent.” So let’s say Ryan needs to find close-enough deductions and loopholes to hit 18.5 percent of GDP. That means he’d need to close about $6.2 trillion in tax deductions and loopholes over 10 years.
That will not be easy. And, as of now, he has not named even one deduction or loophole that he would close.