Not all viruses are dangerous. For instance; some are vital to how we function. The effects of endogenous retroviruses (those that stitch themselves into the human genome) are thought to have been essential for the evolutionary development of placental mammals as one example. Viruses can strategically trigger actions such as reproduction and, or go dormant depending on the biological climate at the time. The fact that cell replication in complex organisms like ourselves takes place and then goes dormant strategically may be due, at least in part, to the influence of viruses in the form of the genetic remnants of the traits that are now embedded in our genes. This, along with many other functions in human biology are parallel to, and could potentially be a result of, the influence of viral behaviors.
In addition to physiology, viruses are known to affect other behaviors such as those we categorize as psychological. The rabies virus is one well known virus that causes increased saliva flow and aggression in mammals. The borna disease virus can infect a number of animals, including humans. It has been known to cause hyperactivity, somnolence, depression and agitation. The point being; our experience as humans is built on a biological relationship economy that extends well beyond a stable set of genes. The relationship field from which we are composed can be cultivated, but it requires understanding how the whole process works. We have a long way to go, but we have made progress.
The spectrum of relationships in nature spans from constructive to destructive and that constructive vs. destructive trait depends on context. Some biological relationships contribute adaptive value, in these cases they are conserved. Viruses, like bacteria and so on can play destructive roles in the context of one system and a neutral or beneficial role in the context other systems. Like the role our various systems play from the respiratory system which carries nutrients in the form of oxygen to our cells, to the immune system which seeks out and destroys perceived antagonists, viruses also exist on this spectrum.. Some are lytic, in that they damage the relationship systems the host cell(s) depend on in such a way that the system is disrupted or destroyed. Understanding this destructive end of the biological spectrum, and how to remedy and or prevent these things from happening in the context of human systems is an important part of the further development of medicine. Here is a look at some of the work going on at the forefront of that discovery process:
𝗗𝗲𝘁𝗲𝗰𝘁𝗶𝗻𝗴 𝗗𝗮𝗻𝗴𝗲𝗿𝗼𝘂𝘀 𝗟𝗮𝘁𝗲𝗻𝘁 𝗩𝗶𝗿𝘂𝘀𝗲𝘀
“…Most people on the planet are thought to carry the HHV-6 virus, which doesn’t cause symptoms in the majority of cases. Antibodies to the virus can be found in anywhere from 95 to 100 percent of healthy individuals, showing that most adults have become infected at some point. It’s thought to be harmless, but in people that have undergone organ transplant, take immunosuppressants, or get a chlamydia infection, the virus can become active… Two types of the virus exist; HHV-6B tends to infect infants and HHV-6A is usually asymptomatic. It does, however, integrate into cellular DNA, where it can remain for a lifetime. It has recently been suggested that the virus can reactivate and may play a role in a variety of diseases including depression, bipolar disorder, schizophrenia, or Alzheimer’s… This work indicates that some prescriptions drugs might be able to reactivate HHV-6, leading to life-threatening danger for the patient. It may be very useful to identify these cases early.”