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Can Your Genes Trump Unhealthy Behavior?
Paul Nurse, Ph.D, is a British biochemist. He was awarded the 2001 Nobel Prize in Physiology or Medicine with Leland H. Hartwell and R. Timothy Hunt for their discoveries regarding cell cycle regulation by cyclin and cyclin dependent kinases. He became Rockefeller University's ninth president in 2003.
Question: How can we promote better collaboration between doctors and scientists?
Paul Nurse: The training and also the way of actually carrying out the profession is quite different between a scientist and a doctor, understandably so. That's not a criticism of either side; it's just how it is. So then we mix two sorts of people like this together, in the same activity, and we expect them to work together, it's like mixing somebody who only speaks English with French and assuming that it is going to work, it won't.
So what do we do about that? First of all recognize the problem and analyze it. And then secondly, we have to deal with it. We have to get the two types of individuals to understand their differences, to see where they are coming from, to realize why they have differing views, and how they can perhaps work best together.
Do you think any of us in the biomedical profession take the slightest bit of notice of trying to do that? It smacks of Sociology and stuff like that. We don't. But this is something where we really need to think in the future.
Have I applied it successfully in my own work? My own work has tended not to involve directly medicine, so I've not being exposed with my own research in that way. But I have seen it many times in my colleagues, and because I've led research institutions, and I've done my best to, at the very least, get mutual respect on both sides of that divide.
I actually think we need a much more professional approach on that problem. I would say it's key for greater success in this area.
Question: How can we improve preventative medicine?
Paul Nurse: Prevention is really important. It's often not given the airtime it should by the scientists themselves because it's quite a difficult subject to study and often requires very long-term trials, sometimes over decades, with large numbers of individuals before you can get good statistical results. It doesn't fit in well with a normal scientific career. If you got a PhD of four years, say, knowing that you're participating in a study that takes 20 years to carry out, it just don't fit. It's quite difficult to do good work in some cases in this area.
It's also a very complicated issue. We all know of individuals who've smoked 40 cigarettes a day, who live till 90. But of course we know that if you do smoke 40 cigarettes a day on average in the population, your life expectancy can be reduced 15 or 20 years (I forget exactly the number). So, it's a hugely negative impact upon your health, even though certain individuals may actually survive that.
Understanding the interaction between the impact of environment with genetics, is really crucial in getting good preventative advice out there. But, this makes these epidemiological studies, that's population-based studies, as their called, even more difficult, because you're not only then trying to simply control for whether an individual is exposed to a particular environmental impact, such as the sun or tobacco or whatever, which is difficult enough in itself, but you're also saying we need to subdivide the population up according to their genetic make up to get good results. And we may not even quite know how to divide them up and which particular variant of genes are important.
These are difficult problems but we are beginning to get into the territory where we can perhaps address them. Maybe that will help us put to rest a lot of the quackery that can go round advice about prevention. I would really like to see that because there is so much nonsense published out there. The media like it because it's relatively easy to understand, and it's a scare story.
If we ask questions like, "Is butter good or bad for you?" I can never remember because what was the last thing I read about it? Usually the reasons that we, as a public, get confused about such matters are that are reported are actually pretty small, and it all depends on the context of the trial, let alone the genetic make up the individuals involved in it. And we get blown around like a weather vane by just the latest report which is often made to be rather sensational.
I see this being rather slowly developed, because the studies have to be so long-term, and we're not yet in a good place for looking at the interactions between genetics and environment well. But I think it's really important because if we can give good advise to individuals about what their lifestyle is, that's going to have the big impact.
Recorded on: May 20, 2009
Prevention is very important, but scientists often don't focus on it because it's quite a difficult subject to study and often requires very long-term trials.
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Gender and sexual minority populations are experiencing rising anxiety and depression rates during the pandemic.
- Anxiety and depression rates are spiking in the LGBTQ+ community, and especially in individuals who hadn't struggled with those issues in the past.
- Overall, depression increased by an average PHQ-9 score of 1.21 and anxiety increased by an average GAD-7 score of 3.11.
- The researchers recommended that health care providers check in with LGBTQ+ patients about stress and screen for mood and anxiety disorders—even among those with no prior history of anxiety or depression.
Study findings<p>For the study, <a href="https://link.springer.com/article/10.1007/s11606-020-05970-4" target="_blank">published in the Journal of General Internal Medicine</a><em>, </em>Flentje and her team evaluated survey responses from nearly 2,300 individuals who identified as being in the lesbian, gay, bisexual, transgender, and queer (LGBTQ+) community. Most of the participants were white, while nearly 19 percent identified as a racial or ethnic minority. Multiple genders were represented with cisgender women (27.2 percent) and men (24.6 percent) making up a majority of the participants. Sixty-three percent had been assigned female at birth. For the most part, participants identified their sexual orientations as queer (40.3 percent), gay (36.5 percent), and bisexual (30.3 percent).</p><p>The JGIM study participants were recruited from the 18,000-participant <a href="https://pridestudy.org/" target="_blank">PRIDE Study</a> (Population Research in Identity and Disparities for Equality), which is the first large-scale, long-term national study focusing on American adults who identify as LGBTQ+. It conducts annual questionnaires to understand factors related to health and disease in this population. </p><p>Participants filled out an annual questionnaire (starting in June 2019) and a COVID-19 impact survey this past spring. Flentje noted that on an individual level, some people may not have experienced a big change in anxiety or depression levels, but for others there was. Overall, depression increased by a <a href="https://patient.info/doctor/patient-health-questionnaire-phq-9" target="_blank">PHQ-9 score</a> of 1.21, putting it at 8.31 on average. Anxiety went up by a <a href="https://www.mdcalc.com/gad-7-general-anxiety-disorder-7" target="_blank">GAD-7</a> score of 3.11 to an average of 8.89. Interestingly, the average PHQ-9 scores for those who screened positive for depression at the first 2019 survey decreased by 1.08. Those who screened negative for depression saw their PHQ-9 scores increase by 2.17 on average. As for anxiety, researchers detected no GAD-7 change among the study participants who screened positive for anxiety in the first survey, but did see an overall increase of 3.93 among those who had initially been evaluated as negative for the disorder. </p>
Risks among gender and sexual minorities<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="fc3fd1ae68b77bbbf58a6995638d6d65"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/EnUqDjCqg0A?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p>The LGBTQ+ community is a vulnerable population to mental health concerns because of their fear of stigmatization and previous discriminatory experiences.</p> <p>Previous research by the Human Rights Campaign has found "that LGBTQ Americans are more likely than the <a href="https://medicalxpress.com/tags/general+population/" target="_blank">general population</a> to live in poverty and lack access to adequate medical care, paid <a href="https://medicalxpress.com/tags/medical+leave/" target="_blank">medical leave</a>, and basic necessities during the pandemic," said researcher Tari Hanneman, director of the health and aging program at the campaign.</p> <p>"Therefore, it is not surprising to see this increase in anxiety and depression among this population," Hanneman said in the release. "This study highlights the need for <a href="https://medicalxpress.com/tags/health+care+professionals/" target="_blank">health care professionals</a> to support, affirm and provide <a href="https://medicalxpress.com/tags/critical+care/" target="_blank">critical care</a> for the LGBTQ community to manage and maintain their mental health, as well as their physical health, during this pandemic."</p>
What should health care providers do?<p>The authors of the study recommend that health care providers check in with LGBTQ+ patients about stress and screen for mood and anxiety disorders in members of that community—even among those with no prior history of anxiety or depression.</p><p>As cases of COVID-19 continue to mount, the sustained social distancing, potential isolation, economic precariousness, and personal illness, grief, and loss are bound to have increased and varied impacts on mental health. Effective treatments may include individual therapy and medications as well as more large-scale coronavirus support programs like peer-led groups and mindfulness practices. </p><p>"It will be important to find out what happens over time and to identify who is most at risk, so we can be sure to roll out public health interventions to support the mental health of our communities in the best and most effective ways," said Flentje.</p>
What we know about black holes is both fascinating and scary.
- When it comes to black holes, science simultaneously knows so much and so little, which is why they are so fascinating. Focusing on what we do know, this group of astronomers, educators, and physicists share some of the most incredible facts about the powerful and mysterious objects.
- A black hole is so massive that light (and anything else it swallows) can't escape, says Bill Nye. You can't see a black hole, theoretical physicists Michio Kaku and Christophe Galfard explain, because it is too dark. What you can see, however, is the distortion of light around it caused by its extreme gravity.
- Explaining one unsettling concept from astrophysics called spaghettification, astronomer Michelle Thaller says that "If you got close to a black hole there would be tides over your body that small that would rip you apart into basically a strand of spaghetti that would fall down the black hole."
The team caught a glimpse of a process that takes 18,000,000,000,000,000,000,000 years.
- In Italy, a team of scientists is using a highly sophisticated detector to hunt for dark matter.
- The team observed an ultra-rare particle interaction that reveals the half-life of a xenon-124 atom to be 18 sextillion years.
- The half-life of a process is how long it takes for half of the radioactive nuclei present in a sample to decay.
A new study looks at what would happen to human language on a long journey to other star systems.
- A new study proposes that language could change dramatically on long space voyages.
- Spacefaring people might lose the ability to understand the people of Earth.
- This scenario is of particular concern for potential "generation ships".