Science, Art, Litt, Science based Art & Science Communication
Q: Dr. Krishna, is it true that children who 're raised in dust and dirty conditions will be more immune to diseases than children who 're brought up in a clean environment? If this is true then what is the use of being clean?
Krishna: Several people asked me this Q. Yes, if you are exposed to more microbes in a dirty environment you develop immunity to them. Children develop less allergies.
But things are not that simple and rosy. It is a complex web and scary too at times.
To develop immunity, first a child will have to be exposed to micro-organisms. When the number of a particular species of a micro-organism a child is exposed to is more than the immune system can cope - this usually happens in very dirty conditions - the child develops various diseases and health conditions which make the child very weak and in severe cases if medical help is not available, the child can even die. That is more tragic. A disease-survived weak child gets more deadly diseases. This is a vicious cycle.
Dirty conditions also invite more disease carrying vectors like flies, mosquitoes, fruit-flies etc.
Moreover, very small children have less developed immune systems which cannot fight diseases. Once they develop dangerous diseases, death becomes inevitable.
Then do you think dirty conditions are good? No!
The best solution is being moderately clean and getting vaccinated. With vaccination you and your child will get exposed to killed or weakened microbes that cannot cause disease but at the same time you develop immunity to the microbe. Moderate cleaning keeps away most disease causing vectors and little bit exposure to pathogens and allergens make you immune to most diseases.
Q: Is it true that bathing in a tub makes you more dirty?
Krishna: If you are very dirty and when several people use the same tub for bathing, the answer is an emphatic yes. It is like bathing in your own dirt if you are very dirty. The dirt just comes off in the water and you are sitting in dirty water.
Moreover, various orifices of your body carry lots of microbes which can enter the water and coat you with microbial films.
Soaps you use can remove some of the microbes but with lots of the minute creatures all over the place you cannot avoid getting more vulnerable. Microbes are getting more and more resistant these days. Even if you use soaps and disinfectants, they might not work fully. Bleach and alcohol can work but you cannot bathe in those solutions.
If you enter a bath tub and stay there for some time, you will have to take a shower again to clean yourself. Period.
Q: Do we get water borne diseases when we bathe in rivers?
Krishna: If the water is crystal clear, you can bathe in rivers. Earlier people used to bathe in them without getting affected much.
But almost all the rivers are polluted now. Bathing in the dirty water can now get you - diarrhea, cholera, typhoid, giardiasis (an infection in your small intestine caused by a microscopic parasite called Giardia lamblia), amoebiasis, cryptosporidiosis, dysentery, botulism, E. coli infection , salmonellosis, vibrio illness ( microbes enter through wounds and cause infection), M. marinum infection, swimmer's ear (infection of ear), hepatitis, acute gastrointestinal illness [AGI], polio, nematode and helminth infestations and several other diseases and health conditions. I have seen people taking water into their mouths while swimming in water. Most of them don't even wear protective gear to protect their eyes, nose and ears. If you have any cuts or wounds you should never enter dirty water bodies.
Yes, it is better to not to bathe in rivers now. Use only treated (for removal of contamination) or hot water to clean yourself.
Put a drop of untreated water under the microscope and you will see microbes similar to these ....
( 'Under the Microscope' art work by Dr. Krishna Kumari Challa
Source: http://www.kkartfromscience.com )
Q: Should new born babies be bathed immediately after birth?
Krishna: These are WHO's recommendations (1):
WHO emphasizes key elements of newborn care including delayed bathing, skin-to-skin contact and immunization. WHO says bathing should be delayed until 24 hours after birth. If this is not possible due to cultural reasons, bathing should be delayed for at least 6 hours [according to medical practitioners the vernix (white waxy coating) is an excellent moisturizer and skin protector].
Consider the use of chlorhexidine for umbilical cord care for babies born at home to reduce newborn
mortality. For newborns who are born at home in settings with high neonatal mortality (30 or more neonatal deaths per 1,000 live births) it is recommended to apply chlorhexidine (7.1% chlorhexidine digluconate aqueous solution or gel, delivering 4% chlorhexidine) daily to the umbilical cord stump during the first week of life. This is a new recommendation, and clean, dry cord care remains the standard recommendation for newborns born in health facilities and at home in low neonatal mortality settings. The use of chlorhexidine in these situations may be considered only to replace application of a harmful traditional substance, such as cow dung or urine, to the cord stump.
Q: Can children have baths when they have infections like chicken pox? Why do scars occur and how can we avoid them?
Krishna: Yes, it's fine for your children to have a bath or a shower 'with clean water' despite being covered in chicken pox spots. Some children find that bathing in lukewarm water helps to ease the itching and if it works for your children you could let them have baths or showers until the spots become less itchy. Children with infections definitely feel better after a bath.
Scarring usually arises as a result of secondary infection of the chicken pox blisters, hence the advice not to scratch the blisters. Scratching the blisters may transfer bacteria from ones nails into the pox lesion thereby causing further inflammation that might leave a small permanent crater in the skin. Therefore, if your skin is very itchy apply some calamine lotion to the skin and re-apply the lotion frequently because its duration of action is quite short.
Also, it is important to understand that you have to use very clean water to avoid secondary infections.
Q: Does eating coconuts during chicken pox infection cause eye scarring and blindness?
Krishna: It just is a superstition. Coconuts don't cause blindness.
The chicken pox infection can cause sudden blindness or stroke and can be life-threatening. The varicella zoster virus, of the herpes virus family, can cause chicken pox and may reactivate later in life in the form of shingles, a very painful rash.
Some studies link the virus that causes chicken pox and shingles to a condition that inflames blood vessels on the temples and scalp in the elderly, called giant cell arteritis. One of these studies is published in the February 18, 2015, online issue of Neurology, the medical journal of the American Academy of neurology. The condition can cause sudden blindness or stroke and can be life-threatening. The Varicella zoster virus, of the herpes virus family, can cause chicken pox and may reactivate later in life in the form of shingles, a very painful rash.
Shingles is a disease that causes a painful, blistering rash to form on the body and sometimes the face. The Varicella-zoster virus causes it. This is the same virus that causes chickenpox. Once you’ve had chickenpox, the virus stays in your system. It can reemerge decades later as shingles. In about 10 to 20 percent of people with shingles, the rash appears in and around the eye. This type of shingles is called ophthalmic herpes zoster, or herpes zoster ophthalmicus. Shingles in the eye can cause scarring, vision loss, and other long-term problems. You can prevent shingles of the eye and its complications by getting vaccinated if you’re over age 50.
Also Herpes simplex type 1, or HSV1, which causes cold sores on your lips and mouth, can also lead to eye problems. It usually results in an infected cornea. This is known as herpes simplex keratitis. Herpes simplex type 2 (HSV2) can also cause keratitis, mostly in newborns, but it’s rare. A swollen cloudy cornea results because of the infection and people think it is eating copra during chicken pox infection causes it which is not true.
Consult an eye doctor as soon as you notice itching or redness in the eye to avoid other complications. Doctors will prescribe antiviral eye drops, pills, or both.
Q: Can depression or tension lead to fever? If yes, then what is the scientific reason behind it?
Simple sugars…like those in high fructose corn syrup or the table sugar formally known as sucrose…were thought to be absorbed in the small intestine, so a lot of our gut bacteria would never actually be exposed to them. Because fiber and complex carbs, made of long chains of sugar molecules, are harder to digest…they make it all the way to the large intestine, where they promote the growth of good bacteria like Bacteroides thetaiotaomicron…a microbe found in individuals who are healthy and lean.
But now what this study actually shows is that both fructose and sucrose do make it to the colon where the microbiota exist. And second that these sugars impact a good bacterium even though nutrition is not involved. In other words, the bacteria are not using fructose and sucrose as food. Instead, the sugars serve as signals that shut down production of a protein that is beneficial for Bacteroides which need to colonize the intestine. That is bad news.
Q: Does physical exercise affect our brains too?
Krishna: Yes, undoubtedly. Exercise affects the brain in many ways. It increases heart rate, which pumps more oxygen to the brain. It aids the release of hormones which provide an excellent environment for the growth of brain cells. Exercise also promotes brain plasticity by stimulating growth of new connections between cells in many important cortical areas of the brain. Research from UCLA even demonstrated that exercise increased growth factors in the brain which makes it easier for the brain to grow new neuronal connections.
From a more feel-good perspective, the same antidepressant-like effects associated with the "runner's high" has been correlated with a drop in stress hormones. A study from Stockholm showed that the antidepressant effect of running was also associated with more cell growth in the hippocampus, an area of the brain responsible for learning and memory. The study went as far as to say “Thus, suppression of cell proliferation in the hippocampus could constitute one of the mechanisms that underlie depression, and physical activity might be an efficient antidepressant.
Q: Is it possible that some PhDs never heard about a few terms in their own fields?
Krishna: Yes, it is possible! A PhD in any topic is actually very specific in the material it covers. It doesn't deal with everything in the subject. However, a person who went to do research in any field would usually have studied all the general areas of his or her field in that PG course.
Recently some physicists agreed that they never heard the term exergy (available energy). They explained this 's because they branched into and working in separate areas of physics (not thermodynamics to which this term belongs) where this term is not used! A person whose research topic was semiconductors will not have any special ability to talk about astrophysics or quantum computing. They know a lot about semiconductors alright but not about supernovae and terms used to describe it. The point here is that physics is a very broad subject, and it’s quite possible for two physicists to have almost entirely different sets of physics knowledge in their brains, regardless of being masters or research scholars at PhD level.
Also this term exergy must have been coined by some person who 's not very much known in the field and as it 's not widely accepted, it 's not a specialist term. Therefore, they use common language terms instead of it. People usually describe things instead of using a specific term. For this reason, it’s highly likely that the majority of physics PhD candidates have never encountered ‘exergy’ in their lives, and probably haven’t studied any more thermodynamics than any other physics student covers in the first or second year of their undergraduate degree. It just isn’t a particularly important thing. Moreover, it is not surprising if a PhD candidate has forgotten some stuff that he once knew, but hasn't used for several years, if his field of study goes nowhere near this topic. What matters to a physicist isn't a comprehensive knowledge of phrases and terminology — but an understanding of the concepts to do research.
So they don't worry about some unknown jargon.
Science is such a vast subject and keeping up with all of it is highly impossible to even specialists in the subject. So don't expect that the experts would know everything about science. They don't most of the time!
Q: What is the use of having so much knowledge? One day you will die and all that learning is going to be a waste!
Krishna: Don't be so optimistic about wasting my knowledge! :) I might be a mortal but my knowledge is immortal! I am sharing it with several people who will see to it that it continues to live as long as this world exists. Moreover, I and everybody who come in contact with this knowledge can use it throughout our lives improving tremendously the quality of each life that goes the scientific way .
Knowledge will never go waste. That is a rule etched in stone.
Q: Will science get success in controlling the minds of the other people with the help of a device?
Okay, scientists controlled by Governments when forced to do such things, might try and succeed.
Controlling insane minds (because of bad circuits in the brain) using medicines can be done.
But I don’t recommend them as they are dangerous.
If you take them you will have hallucinations and delusions including the ones you mentioned.
You can also ‘imagine things’ if you have fear, extreme emotions, mental conditions and things like that.
According to science there is no evidence of ghosts, spirits , devils etc. So there is no choice but to go the alternate ways if you want to ‘see them’ !
First, PhD or research training wasn’t boring at all in my case. I enjoyed the thrill every moment of it. I was completely immersed in it as it was very thrilling and challenging.
Second a person who really is interested in scientific research and experienced the thrill of it, will not think much about the money aspect. I never do.
PhD is completely different from your Masters degree in science and without the training you find it difficult to do regular research as a scientist or a professor.
After completing my PhD, I am more confident now and became more independent. I wasn’t so confident after completing my masters. PhD training has a definite advantage over PG.
Also, I am more ‘learned’ now, ‘know more’ now, ‘more intelligent’ now, ‘more creative’ now, and feel like a ‘complete person’.
The article in The Economist was written by a person who couldn’t go very far and therefore is a frustrated being.
My world is different from it and therefore my view is completely dissimilar from this person’s analysis.
1. https://www.who.int/maternal_child_adolescent/publications/WHO-MCA-...
2. https://www.tandfonline.com/doi/full/10.1080/23328940.2015.1056907
3. https://www.pnas.org/content/early/2018/12/12/1813780115
4. https://www.nature.com/articles/s41366-018-0259-y
5. https://www.facebook.com/healthdigest/photos/a.187939824672351/2106...
6. Gadhwal, A. K., Ankit, B. S., Chahar, C., Tantia, P., Sirohi, P., & Agrawal, R. P. (2016). Effect of Carica papaya leaf extract capsule on platelet count in p.... J Assoc Physicians India, 64(6), 22-6.
7. Kasture, P. N., Nagabhushan, K. H., & Kumar, A. (2016). A multi-centric, double blind, placebo controlled, randomized, pros...J Assoc Physicians India, 64(6), 15-20.
8. https://www.altnews.in/is-caripill-the-drug-from-papaya-leaf-extrac...
Tags:
319
© 2024 Created by Dr. Krishna Kumari Challa. Powered by