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New 20-year study: long-term use of cannabis raises risk of mental health problems

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A new study on marijuana was reported in the UK Daily Mail.

Excerpt:

A definitive 20-year study into the effects of long-term cannabis use has demolished the argument that the drug is safe.

Cannabis is highly addictive, causes mental health problems and opens the door to hard drugs, the study found.

The paper by Professor Wayne Hall, a drugs advisor to the World Health Organisation, builds a compelling case against those who deny the devastation cannabis wreaks on the brain. 

Professor Hall found:

  • One in six teenagers who regularly smoke the drug become dependent on it
  • Cannabis doubles the risk of developing psychotic disorders, including schizophrenia
  • Cannabis users do worse at school. Heavy use in adolescence appears to impair intellectual development
  • One in ten adults who regularly smoke the drug become dependent on it and those who use it are more likely to go on to use harder drugs
  • Driving after smoking cannabis doubles the risk of a car crash, a risk which increases substantially if the driver has also had a drink
  • Smoking it while pregnant reduces the baby’s birth weight

Last night Professor Hall, a professor of addiction policy at King’s College London, dismissed the views of those who say that cannabis is harmless.

‘If cannabis is not addictive then neither is heroin or alcohol,’ he said.

‘It is often harder to get people who are dependent on cannabis through withdrawal than for heroin – we just don’t know how to do it.’

Those who try to stop taking cannabis often suffer anxiety, insomnia, appetite disturbance and depression, he found. Even after treatment, less than half can stay off the drug for six months.

I’m seeing a lot of “Christian libertarians” being supportive of initiatives to legalize drugs, but there is a reason why drugs are illegal. They hurt people. They hurt families. Why would we want to celebrate and normalize something that is known to cause harm?

Please see below for more recent studies on the effects of marijuana.

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Polemics

If you find a discrepancy in the Bible, does that mean Jesus didn’t exist?

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Even if we don’t know whether there was one angel or two angels at Jesus’ tomb, we can still know things about whether God exists and whether Jesus rose from the dead.

First, we can know that the universe was created and designed because of reliable, experimental evidence that the universe came into being and is finely-tuned for life. And second, we can know that Jesus was buried, that his tomb was found empty, that a variety of people had experiences of him appearing to them after his death, and that the Christian movement had an early belief that he was resurrected from the dead. We know those core things like we know anything – because we have good evidence. Other things that are more peripheral may not be as supported by evidence. We can remain agnostic about those peripheral things, but that agnosticism about peripheral things doesn’t undermine the things that we know.

William Lane Craig answered a question related to this problem for a person who accepted the minimal facts case for the resurrection but then though that someone this case couldn’t work unless he accepted inerrancy as well.

Here’s the question:

After re-evaluating my Christian faith and pruning it for two years, I can’t shake what seem like two disparate conclusions. One is that the evidence for Jesus resurrection is impecable. But the other is that there seem to be some very awkward realities about the composition of scripture (like errors or authors claiming to write by another name). Yet, the authors of the New Testament, including Jesus, seem to use Scripture in a way that assumes it is word for word from God.

While inductive logic is used to arrive at a strong historical case for the resurrection of Jesus, inductive logic can also be used to arrive at a strong case for many of the peculiaraties about Scripture previously mentioned.

It seems that the approach which many apologists take at this point is that, having established the authority of Jesus by the resurrection, if the argument being raised against scripture contradicts an opinion expressed by Jesus in the Gospels, then the argument for a contradiction must have no possible harmonizations for it to really stick. But I don’t see how this is fair to say, since (1) it seems unfair to use inductive logic to evidence Jesus’ resurrection but then not use it for criticisms against the Bible and (2) an inductive argument can be strong despite what Jesus as recorded in the Gospels says, especially since we cannot assume the precision with which many of the saying were recorded. And (3), anybody can cook up a harmonization of some verse that is possible but not plausible, which I am sure you have seen first hand many times.

Yet, holding these two positions in tension tends to be corrosive to my faith and ultimately leads to a certain bitterness against God for allowing the biblical writers to play fast-and-loose with his words and for not providing a clarity that brings more certainty about what is from him and what isn’t. Any help you can give to relieve this tension would be greatly appreciated.

Now Dr. Craig has a long response on his Reasonable Faith web site, but I just want to quote you this:

But secondly, suppose you’ve done all that and are still convinced that Scripture is not inerrant.  Does that mean that the deity and resurrection of Christ go down the drain?  No, not all.  […]As you recognize, we have a very strong case for the resurrection of Jesus.  That case in no way depends on the Bible’s being inerrant.  This became very clear to me during my doctoral studies in Munich with Wolfhart Pannenberg.  Pannenberg had rocked German theology by maintaining that a sound historical case can be made for the resurrection of Jesus.  Yet he also believed that the Gospel resurrection appearances stories are so legendary that they have scarcely a historical kernel in them!  He did not even trust the Markan account of the discovery of the empty tomb.  Rather his argument was founded on the early pre-Pauline tradition about the appearances in I Corinthians 15.3-5 and on the consideration that a movement based on the resurrection of dead man would have been impossible in Jerusalem in the face of a tomb containing his corpse.

Evangelicals sometimes give lip service to the claim that the Gospels are historically reliable, even when examined by the canons of ordinary historical research; but I wonder if they really believe this.  It really is true that a solid, persuasive case for Jesus’ resurrection can be made without any assumption of the Gospels’ inerrancy.

By contrast, the case for Jesus’ belief that the Old Testament Scriptures are inerrant is much weaker.  I think there’s no doubt that (5) is the premiss that would have to go if biblical inerrancy were to be abandoned.  We should have to re-think our doctrine of inspiration in that case, but we needn’t give up belief in God or in Jesus, as Bart Ehrman did.  Ehrman had, it seems to me, a flawed theological system of beliefs as a Christian.  It seems that at the center of his web of theological beliefs was biblical inerrancy, and everything else, like the beliefs in the deity of Christ and in his resurrection, depended on that. Once the center was gone, the whole web soon collapsed.  But when you think about it, such a structure is deeply flawed.  At the center of our web of beliefs ought to be some core belief like the belief that God exists, with the deity and resurrection of Christ somewhere near the center.  The doctrine of inspiration of Scripture will be somewhere further out and inerrancy even farther toward the periphery as a corollary of inspiration.  If inerrancy goes, the web will feel the reverberations of that loss, as we adjust our doctrine of inspiration accordingly, but the web will not collapse because belief in God and Christ and his resurrection and so on don’t depend upon the doctrine of biblical inerrancy.

We have mainstream scientific evidence for God’s existence, and a mainstream historical evidence for a minimal facts case for the resurrection. None of that evidence depends on inerrancy being true.

So can we please just accept what can be known from experimental science and standard historical methods, and work our lives around that, and not nitpick about peripheral issues so much? I am inerrantist, and so is Dr. Craig. But you don’t have to be in order to accept that the mainstream evidence that shows that universe was created and fine-tuned, and that Jesus was raised bodily from the dead. Don’t let “one angel vs two angels “stop you from accepting things we can know. You can just stay agnostic about the things you think we don’t know.

News

New study: children’s brains function better when they can see their mothers

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The new study published in Psychological Science was reported in Pacific Standard.

Excerpt:

For little kids, seeing mom or dad nearby is a calming influence, maybe the difference between between perfect calm and a full-bore freakout. It’s as if having a trusted caregiver nearby transforms children from scared toddlers into confident adolescents. And in a way, a new report suggests, that’s what having mom around does to a kid’s brain.

When they’re first born and for years after, infants and young children can’t do a whole lot by themselves. They can’t eat on their own, they aren’t very good at managing their emotions, and it takes a while for them to learn how to dress themselves. Most children figure it out eventually, but in the meantime they need their parents to do a lot of that stuff for them. All the while, their brains are changing, too. Well into adolescence, kids’ brains undergoanatomical and physiological changes that affect the way we think and act.

[…]Young children’s brains responded differently based on whether they were looking at their mothers or strangers. In particular, their brains showed signs of positive amygdala-PFC connections when viewing pictures of strangers, but negative connections when viewing pictures of their mothers, suggesting more mature and stable brain function—and likely more mature and stable behavior, at least when moms were around. In contrast, tweens and teens had negative connections whether they were looking at their mothers or strangers. In other words, looking at pictures of their mothers made young children’s brains look a little more like those of adolescents.

The companion behavioral experiment backed up that thinking—young children made around 20 percent fewer errors when their mothers were present than when they weren’t, while there was no difference for adolescents. That combined with the fMRI results to suggest that mothers—and likely other caregivers—can provide an external source of mental regulation that young children won’t develop until later in life, the authors write in Psychological Science.

In view of the recent triumphs for gay marriage advocates, I think it’s worth remembering that gay marriage, like single motherhood, is not the best we can do for children. I think it’s a bad enough situation when the husband dies and leaves his children to be raised by the mother. That’s hard, but it’s not immoral. On the other hand, I think that deliberately choosing to deprive a child of his or her mother or father IS immoral. It’s child abuse, in my opinion. And that goes for gay marriage as well as “single motherhood by choice”. I also oppose frivolous divorce (“frivorce”), which is very popular in a nation that views structured courtship as “boring” and no-fault divorce as a woman’s right.

Previously, I blogged about another study that showed the importance of moms for young children.

Excerpt:

Both of these images are brain scans of a two three-year-old children, but the brain on the left is considerably larger, has fewer spots and less dark areas, compared to the one on the right.

According to neurologists this sizeable difference has one primary cause – the way each child was treated by their mothers.

The child with the larger and more fully developed brain was looked after by its mother – she was constantly responsive to her baby, reported The Sunday Telegraph.

But the child with the shrunken brain was the victim of severe neglect and abuse.

According to research reported by the newspaper, the brain on the right worryingly lacks some of the most fundamental areas present in the image on the left.

The consequences of these deficits are pronounced – the child on the left with the larger brain will be more intelligent and more likely to develop the social ability to empathise with others.

But in contrast, the child with the shrunken brain will be more likely to become addicted to drugs and involved in violent crimes, much more likely to be unemployed and to be dependent on state benefits.

The child is also more likely to develop mental and other serious health problems.

Professor Allan Schore, of UCLA, told The Sunday Telegraph that if a baby is not treated properly in the first two years of life, it can have a fundamental impact on development.

He pointed out that the genes for several aspects of brain function, including intelligence, cannot function.

[…]The study correlates with research released earlier this year that found that children who are given love and affection from their mothers early in life are smarter with a better ability to learn.

The study by child psychiatrists and neuroscientists at Washington University School of Medicine in St. Louis, found school-aged children whose mothers nurtured them early in life have brains with a larger hippocampus, a key structure important to learning, memory and response to stress.

The research was the first to show that changes in this critical region of children’s brain anatomy are linked to a mother’s nurturing, Neurosciencenews.com reports.

The research is published online in the Proceedings of the National Academy of Sciences Early Edition.

Lead author Joan L. Luby, MD, professor of child psychiatry, said the study reinforces how important nurturing parents are to a child’s development.

I have a very good feminist non-Christian friend who sometimes comments here. I once asked her about marriage and she said that her skills would be wasting on raising children. I explained to her my view that a mother needs to stay at home with the children, and that is more important work. I expect my future wife to read all kinds of books on child care and to give the child attention, nutrition, exercise and play so that the child will grow up to be an effective Christian. Maybe I need to be clear. I am not going to spend hundreds of thousands per child with just any woman. I need a woman who can produce influential and effective Christians who will engage in the public square. And we do not entrust that job to just anyone. We want educated, professional women who are willing to be stay-at-home moms when it’s necessary to do that – for the sake of the children.

I expect the woman I marry (if I marry) to have a college degree, and preferably a graduate degree, and at least a couple of years of employment. Then she has to stay home and invest in those children through the first five years, at least. After that she can stay home or work as much as she thinks is beneficial to the family goals of impacting the university, the church and the public square – as well as continuing to raise those children. It’s not a waste of her talent to make the next William Lane Craig, or the next Marsha Blackburn, or the next Doug Axe, or the next Edith Hollan Jones.