Genetics

If molecular genetic research had actually delivered the genes for psychiatric disorders promised by mainstream psychiatry and its subfield of psychiatric genetics, twin research today would be largely obsolete because focus would have shifted to molecular genetic research, and a person’s genotype and diagnosis would be determined directly from his or her DNA. Twin research, therefore, retains its current level of importance in psychiatry only because the genes believed to exist for its disorders, based largely on genetic interpretations of twin studies, have not been found.

"For more than 20 years, I’ve hammered behavioral genetics, and especially research linking genes to intelligence," writes John Horgan in his Scientific American blog...

The British Journal of Psychiatry has issued a retraction of an article purporting to have identified evidence of the epigenetic aspects of bipolar disorder,...

If there is one downside to the field of mental health, declares an editorial in The Lancet Psychiatry, "it is the failure of pleasant,...

In the light of the much trumpeted claims that recent research has identified genes for schizophrenia, it is important to review the track record of this type of endeavor. Despite thousands of studies costing millions of dollars, and endless predictions that the genetics of schizophrenia would shortly be revealed, the field has so far failed to identify any genes that substantially increase the risk of developing schizophrenia.

Newsweek writer Alexander Nazaryan overviews the recent "kick in the rear" provided to brain science by hundreds of millions of dollars in donations, and...

Newborn rats can "learn" the fears their mothers have, and then will carry those same fears for the rest of their lives, according to...

Stanford-trained psychologist corrects the public record on recent research linking paternal age with increased risk of psychiatric disorders. Misinformation about the findings of “Paternal Age...

Research from the Semel Institute for Neuroscience and Human Behavior at USC finds that "The standard concept of genetic testing includes at least three...

The safety of our children is a sacred obligation we strive to preserve. Anything or anyone that harms them becomes the object of our...

An NBC online News article dated October 15, 2010, carried the noteworthy title New blood test may help detect schizophrenia. The article was written by Natasha Allen, a freelance medical journalist. The gist of the article is that there is a new blood test called VeriPsych which "researchers say" is 83% accurate in discriminating people who are "schizophrenic" from people who are not.

On November 12, 2013, Molecular Psychiatry published online Evidence That Duplications of 22q11.2 Protect Against Schizophrenia, by Rees et al. The print version was published last month – January 2014. The idea of a genetic mutation that would protect one from schizophrenia aroused a good deal of interest and enthusiasm. The paper has added some impetus to psychiatry's claim that the condition known as schizophrenia is a genetic disease. For this reason, I thought it might be helpful to take a closer look at the study.

Although psychosis is more common in the parents of people with psychosis than those without, the difference cannot be attributed to genetics, research from...

Nature tells of Richard Tremblay, who explores the effects of trauma and aggression on the life course — and beyond, through the influence of epigenetics. Article →

Research from the universities of Cardiff, Cambridge and Bristol finds no evidence of a link between genetic associations with schizophrenia and adolescent psychotic experiences....

According to a leading group of psychiatric genetic researchers, writing in 1999, “From the perspective of psychiatric genetics, the Human Genome Project is an immense factory producing and refining the tools we will need to discover the genes that cause mental illness.” A 2002 “speculative outline” by a group helping to revise the DSM envisioned a future DSM-5 practice of classifying disorders on the basis of "the patient’s genotype, identifying symptom- or disease-related genes, resiliency genes, and genes related to therapeutic responses and side effects to specific psychotropic drugs.” A dozen or so years ago, at least some of the DSM-5 architects believed that genes would at long last be identified and would be integrated into the next version of the DSM. As we know, this did not happen.

Psychiatric molecular genetic research has failed to discover genes that underlie the major psychiatric disorders, the existence of which twin and adoption studies are assumed to have established. "Genome-wide complex trait analysis" (GCTA) was developed a few years ago as a means of solving what researchers call the "missing heritability" problem. One researcher believed that the new GCTA method would “drive a stake through the heart of” criticism of behavioral genetic theories and methods, and would finally put criticism of twin studies “to rest.” The opposite scenario appears to be playing out, however, as leading behavioral genetic and psychiatric genetic researchers struggle to prevent some recent negative GCTA findings and the obvious false assumptions underlying twin research from driving a stake through the heart of twin studies themselves.

Psychiatric Times chronicles the peripatetic progress of "schizophrenia" research, from schizophrenogenic mothers to unspecified genetic lesions and back again via second-trimester embryonic insults, to...

Nature writes, of behavioral genetics, "Although the ability to investigate the genetic factors that underlie the heritability of traits such as intelligence, violent behaviour,...

The idea of spending more time as a bureaucrat in the US Embassy in Iceland did not appeal to me. I longed for the freedom that academics have. While pursuing that dream I stumbled into the world of international media, “chemical imbalance”, book publishing and a greedy professor of psychiatry which was a prelude to my second annus horribilis.

Tension mounts across the ideological divide as D-Day (DSM-5 Day) approaches. The APA has powerful allies on its side. President Obama has just launched Decade of the Brain 2 with the announcement two weeks ago that heralds the arrival of BRAIN ( Brain Research through Advances in Innovative Neurotechnologies). If that’s not enough, those who believe that science will ultimately explain madness can always rely on the media to fawn at their feet.

As most readers are aware, it is widely believed that both within and without of psychiatry genetic factors play an important role in causing major psychiatric disorders such as schizophrenia, bipolar disorder, major depression, ADHD, autism, anxiety, and even post-traumatic stress disorder (PTSD). Twin studies provide the main pillar of support for this belief which is often, though mistakenly, presented as a scientific fact.

On February 28th, the New York Times reported the latest psychiatric disorder “gene finding” claim in an article entitled “5 Disorders Share Genetic Risk Factors, Study Shows,” The Times reporter described a study that claimed to have identified shared genes associated with five psychiatric disorders: autism spectrum disorder, attention/deficit-hyperactivity disorder (ADHD), bipolar disorder, major depressive disorder, and schizophrenia. We have seen thousands of such claims in psychiatry since the 1960s, and we have also seen that these claims do not survive replication attempts.

Two generations of molecular genetic researchers have attempted, yet failed, to discover the genes that they believe underlie the major psychiatric disorders. The most recent failure is a molecular genetic study that was unable to find genes for symptoms of depression. Like most genetic researchers in psychiatry, the authors failed to consider the possibility that no such genes exist.

My public writing has brought my mother and I closer together than we’ve been in decades. There have been disagreements. But now, my almost ninety-year-old mother tells me she reads everything I write. She recently told me that she’s glad I see things so clearly.