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Ultra-processed foods: it’s not just their low nutritional value that’s a concern In countries such as the UK, US and Canada, ultra-processed foods now account for 50% or more of calories consumed. This is concerning… Started by Dr. Krishna Kumari Challa	1	Sep 13, 2022 Reply by Dr. Krishna Kumari Challa
Why do humans walk upright? The secret is in our pelvis! The design of human pelvis makes possible for humans to walk upright on two legs (unlike our primate cousins) and it makes it possible for… Started by Dr. Krishna Kumari Challa	1	Sep 13, 2022 Reply by Dr. Krishna Kumari Challa
What state of matter is 'fire', solid, liquid, gas, or plasma? Q: What state of matter is 'fire', solid, liquid, gas, or plasma? Krishna: A flame is glowing combustion products. Fire is the rapid oxida… Started by Dr. Krishna Kumari Challa	1	Sep 13, 2022 Reply by Dr. Krishna Kumari Challa
Neanderthals died out 40,000 years ago, but there has never been more of their DNA on Earth Credit: Tom Björklund / Moesgård Museum, Author provided Neanderthals have served as a reflection of our own humanity since they were f… Started by Dr. Krishna Kumari Challa	1	Sep 12, 2022 Reply by Dr. Krishna Kumari Challa
Stone babies Q: I heard that women can sometimes carry stones instead of babies in their wombs. Is this true? Krishna: What you think stones are actuall… Started by Dr. Krishna Kumari Challa	1	Sep 12, 2022 Reply by Dr. Krishna Kumari Challa
The influence of researcher sex on experimental outcomes Yes, you read it right! The sex of the researcher can influence results of mouse experiments Ketamine appears to be more effective as an an… Started by Dr. Krishna Kumari Challa	1	Sep 10, 2022 Reply by Dr. Krishna Kumari Challa
Qs related to medical issues and my replies to them Q: Can dehydration cause strokes?Krishna: Dehydration is common in older adults who have strokes, according to a study (1) published in the… Started by Dr. Krishna Kumari Challa	1	Sep 9, 2022 Reply by Dr. Krishna Kumari Challa
Researchers construct most complex, complete synthetic microbiome The gut microbiome, the collection of hundreds of bacterial species that live in the human digestive system, influences neural development,… Started by Dr. Krishna Kumari Challa	1	Sep 7, 2022 Reply by Dr. Krishna Kumari Challa
Discolouration of skin and what other colours indicate Q: Why is it when I press my fingertip hardly it turns yellow for that moment and then return back to the original colour? Krishna: It usua… Started by Dr. Krishna Kumari Challa	1	Sep 7, 2022 Reply by Dr. Krishna Kumari Challa
How did life begin in the universe? Q: How did life begin in the universe? How did non-living things/atoms/particles give birth to life (a living, walking, speaking, thinking… Started by Dr. Krishna Kumari Challa	1	Sep 7, 2022 Reply by Dr. Krishna Kumari Challa