Let there be light: On the 2026 Nobel Prize in Physiology/Medicine

The Nobel Laureates (नोबेल पुरस्कार विजेता) for Medicine illuminated (स्पष्ट करना, प्रकाश डालना) how the brain works

The first of the Nobel announcements has come, heralding (संकेत देना, घोषणा करना) the season of celebrating the fruits (the positive result or reward of work or an activity; result, reward, outcome, benefit) of the perennial (चिरस्थायी, दीर्घकालिक) human endeavour (प्रयास) to know more and use that knowledge to benefit people. The 2026 Nobel Prize (a prestigious international award established through the will of Swedish inventor and entrepreneur Alfred Bernhard Nobel to honour outstanding contributions benefiting humankind; the first Nobel Prizes were awarded in 1901 in Physics, Chemistry, Physiology or Medicine, Literature, and Peace, while the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel was established in 1968 and first awarded in 1969) in Physiology (शरीरक्रिया विज्ञान) or Medicine went jointly to Karl Deisseroth, Peter Hegeman and Georg Nagel “for their discoveries concerning (के संबंध में, के विषय में) light-gated (relating to an ion channel that opens or closes in response to light; light-activated, light-sensitive, photo-activated, light-controlled) ion channels and optogenetics (a biological technique that uses light-sensitive proteins and light to control the activity of specific cells, especially nerve cells, in living tissue; light-based cell control, optical stimulation, light-controlled cell manipulation, photogenetics)”. True to Alfred Bernhard Nobel’s aim of annually recognising (मान्यता देना, महत्व स्वीकार करना) those who have “conferred (प्रदान करना) the greatest benefit to humankind (मानवजाति, समस्त मानवता)”, this year’s Nobel went to people who shone a light, literally (शाब्दिक रूप से, वास्तव में), on the brain, providing a quantum leap (a sudden, significant, and highly important advance or development; breakthrough, major advance, great stride, leap forward) in understanding how it functions. In essence (मूल रूप से, सार रूप में), if the brain is a puppeteer (a person or thing that manipulates or controls others; controller, manipulator, director, operator) pulling the strings, the body is the marionette (a puppet worked by strings, used metaphorically for something being controlled; puppet, tool, instrument, pawn). The dexterity (निपुणता, कुशलता) of the puppeteer is obvious (easily perceived or understood; clear, evident, apparent), but her methods, often (अक्सर, प्रायः) not. It is this that the Nobel trio (a set or group of three people or things; threesome, triad, trinity, triplet) sought to explain with optogenetics — making it possible to show how nerve cells (a fundamental unit of the brain and nervous system; neuron, brain cell, neural cell) communicate with each other, and the body, regulating memory, emotions and bodily (of or concerning the physical body; physical, corporeal, anatomical, somatic) functions. It allowed mapping (study, trace, or represent the structure, activity, or connections of something in a clear and systematic way; chart, trace, analyse) the brain in ways (in certain manners or methods; by means, in manners, in fashions, in respects) that were previously impossible. As most often (in the majority of cases; usually, generally, frequently, typically) in work (referring to scientific or professional activities and research; in research, in studies, in projects, in tasks) that the Nobel acknowledges (recognize, admit, accept) and honours (pay public respect to; recognize, celebrate, commend, acclaim), there was rich (abundant, productive, fruitful, copious) collaboration (cooperation, partnership, teamwork, alliance) across continents in advancing optogenetics. Peter Hegemann wondered (desire to know something or feel curious; ponder, question, speculate, be curious) what enabled (allow, permit, empower, facilitate) Chlamydomonas (a genus of single-celled green algae that can move towards light using a light-sensitive response; in the context of the article, Peter Hegemann studied Chlamydomonas to understand how light-sensitive proteins enable cells to respond to light), a single-celled (consisting of a single cell; unicellular, one-celled, simple, mono-cellular) alga (a simple, usually photosynthetic organism that typically lives in water or other moist environments; seaweed, kelp, aquatic organism, aquatic plant), to swim towards a light source; Georg Nagel went on to discover an algal protein (protein obtained from algae, particularly from algae cultivated or processed as a source of nutrition or biotechnology products) that can be illuminated with blue light to open a channel (a passage for water or ions to flow through; pathway, passage, duct, conduit) within, allowing charged (having an electric charge; electrified, energized, ionised, loaded) ions (an atom or molecule with a net electric charge; particle, charged particle, cation, anion) to flow into the cell and create electrical impulses (a brief wave of electrical excitation on the surface of a cell; signal, current, stimulus, surge). Karl Deisseroth transformed the protein into a light-controlled switch for nerve cells. Practically (virtually or almost; almost, virtually, nearly, essentially), today, scientists use harmless (safe, benign, innocuous, mild) viral agents (a virus used as a vehicle to deliver genetic material into cells; viral vector, delivery vehicle, biological vector, viral carrier) to deliver genes (a unit of heredity transferred from a parent to offspring; genetic code, DNA, hereditary unit, chromosome) for light-sensitive (reactive to or affected by light; photosensitive, photo-reactive, light-responsive, phototropic) proteins into specific target cells. Then they deliver precise pulses of light, activating the channels, allowing research to study the patterns. In the decades (a period of ten years; ten years, ten-year period) since the laureates (awardee, winner, honouree, recipient) described their work, researchers have gone on to use optogenetics to reveal (disclose, unveil, uncover, expose) neural circuits (a group of interconnected neurons that work together to perform a specific function; neural network, neural pathway, neuronal network, nerve circuit) governing (control, regulate, direct, oversee) specific memories, feelings (emotion, sentiment) and behaviours (conduct, manner, attitude) relevant (applicable, pertinent, related, germane) to neurological (relating to the anatomy, functions, and disorders of nerves and the nervous system; neural, nervous, cerebral, neurobiological) and psychiatric disorders (a behavioral or mental pattern that causes significant distress or impairment; mental illness, mental disorder, psychological condition, psychiatric condition). It laid the groundwork for clinical (relating to the observation and treatment of actual patients; medical, therapeutic) treatments targeting conditions (an illness or other medical problem; illness, disease, disorder, ailment) including Alzheimer’s (a progressive neurodegenerative disease that destroys memory and other important mental functions, named after German psychiatrist Alois Alzheimer) and addiction (the condition of being addicted to a particular substance or activity; dependency, dependence, habit, obsession). Researchers are even using the method in attempts to restore (bring back or re-establish, reinstate, bring back, repair) sight (the ability to see or the sense of vision; vision, eyesight, visual ability, perception).

As technology facilitates (make an action or process easy or easier; enable, assist, help, ease) easier pathways to translating scientific research that happens in labs into practical therapies, diagnostics (a device, method, or system used for identifying a disease or condition; diagnostic test) and health-care practices that could ameliorate (improve, enhance, better, alleviate) human health or protect it from illness, it is also important for nations to find ways to ensure that the fruits of such research actually reach all the people who might benefit from it, irrespective of (regardless of, without regard to, notwithstanding, ignoring) their location or station (one’s social rank or position; status) in life.

Courtesy: The Hindu

Important Word List With Meaning

1.Nobel Laureate (noun)

Hindi Meaning - नोबेल पुरस्कार विजेता
English Meaning - a person who has been awarded the Nobel Prize; winner, honouree, recipient, awardee of the Nobel Price.

2.illuminate (verb)

Hindi Meaning - स्पष्ट करना, प्रकाश डालना
English Meaning - help to clarify or explain a subject or matter; clarify, explain, elucidate, reveal.

3.herald (verb)

Hindi Meaning - संकेत देना, घोषणा करना
English Meaning - be a sign that something is about to happen; signal, indicate, announce, proclaim.

4.perennial (adjective)

Hindi Meaning - चिरस्थायी, दीर्घकालिक
English Meaning - lasting or existing for a long or apparently infinite time; enduring, everlasting, perpetual, persistent.

5.endeavour (noun)

Hindi Meaning - प्रयास
English Meaning - an attempt to achieve a goal; effort, attempt, undertaking, venture.

6.Physiology (noun)

Hindi Meaning - शरीरक्रिया विज्ञान
English Meaning - the branch of biology that deals with the normal functions of living organisms and their parts; biology, life science, biological science, bioscience.

7.concerning (preposition)

Hindi Meaning - के संबंध में, के विषय में
English Meaning - on the subject of; in connection with; regarding, relating to, about, respecting.

8.recognise (verb)

Hindi Meaning - मान्यता देना, महत्व स्वीकार करना
English Meaning - acknowledge, appreciate, or give credit to someone or something for their importance, achievement, or contribution; acknowledge, appreciate, honour, acknowledge the value of.

9.confer (verb)

Hindi Meaning - प्रदान करना
English Meaning - bestow, grant, award, present.

10.humankind (noun)

Hindi Meaning - मानवजाति, समस्त मानवता
English Meaning - human beings considered collectively; humanity, mankind, the human race, people.

11.shine a light (phrase)

Hindi Meaning - प्रकाश डालना, स्थिति स्पष्ट करना
English Meaning - examine or explain something clearly so that people can understand it; clarify, elucidate, explain, reveal.

12.literally (adverb)

Hindi Meaning - शाब्दिक रूप से, वास्तव में
English Meaning - exactly, precisely, actually, really.

13.in essence (phrase)

Hindi Meaning - मूल रूप से, सार रूप में
English Meaning - basically and fundamentally; essentially, basically, fundamentally, primarily.

14.dexterity (noun)

Hindi Meaning - निपुणता, कुशलता
English Meaning - skill in performing tasks, especially with the hands; skill, agility, nimbleness, proficiency.

15.often (adverb)

Hindi Meaning - अक्सर, प्रायः
English Meaning - frequently, regularly, repeatedly, habitually.

16.Nobel Prize (noun)

English Meaning - a prestigious international award established through the will of Swedish inventor and entrepreneur Alfred Bernhard Nobel to honour outstanding contributions benefiting humankind; the first Nobel Prizes were awarded in 1901 in Physics, Chemistry, Physiology or Medicine, Literature, and Peace, while the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel was established in 1968 and first awarded in 1969.

17.Let there be light (phrase)

English Meaning - used as a metaphor (figure of speech) for the spread of wisdom/knowledge; used to express the introduction of clarity, understanding, or discovery into a situation; enlightenment, revelation, illumination, discovery.

18.2026 Nobel Prize in Physiology or Medicine (noun)

English Meaning - awarded jointly to Karl Deisseroth, Peter Hegemann, and Georg Nagel for their discoveries concerning light-gated ion channels and optogenetics, which enabled scientists to control the activity of specific nerve cells using light and greatly advanced the study of the brain.

19.fruit (noun)

English Meaning - the positive result or reward of work or an activity; result, reward, outcome, benefit.

20.light-gated (adjective)

English Meaning - relating to an ion channel that opens or closes in response to light; light-activated, light-sensitive, photo-activated, light-controlled.

21.ion channel (noun)

English Meaning - a protein molecule in a cell membrane that forms a passage through which charged ions can flow into or out of the cell; membrane channel, ion-conducting channel, ion pore, membrane pore. (cell membrane is the thin outer covering of a cell that surrounds and protects it and controls what enters and leaves the cell), (membrane is a thin layer that surrounds, covers, or separates something).

22.optogenetics (noun)

English Meaning - a biological technique that uses light-sensitive proteins and light to control the activity of specific cells, especially nerve cells, in living tissue; light-based cell control, optical stimulation, light-controlled cell manipulation, photogenetics.

23.Alfred Bernhard Nobel (1833–1896) (proper noun)

English Meaning - a Swedish chemist, engineer, inventor, entrepreneur, and businessman, best known for inventing dynamite; through his final will, signed on 27 November 1895, he left the bulk of his fortune to establish the Nobel Prizes.

24.quantum leap (noun)

English Meaning - a sudden, significant, and highly important advance or development; breakthrough, major advance, great stride, leap forward.

25.puppeteer (noun)

English Meaning - a person or thing that manipulates or controls others; controller, manipulator, director, operator.

26.pull the strings (phrase)

English Meaning - be in control of events or of other people’s actions; control, manage, direct, orchestrate.

27.marionette (noun)

English Meaning - a puppet worked by strings, used metaphorically for something being controlled; puppet, tool, instrument, pawn.

28.obvious (adjective)

English Meaning - easily perceived or understood; clear, evident, apparent.

29.trio (noun)

English Meaning - a set or group of three people or things; threesome, triad, trinity, triplet.

30.seek (verb)

English Meaning - attempt or desire to obtain or achieve something; try, attempt, aim, strive.

31.nerve cell (noun)

English Meaning - a fundamental unit of the brain and nervous system; neuron, brain cell, neural cell.

32.bodily (adjective)

English Meaning - of or concerning the physical body; physical, corporeal, anatomical, somatic.

33.map (verb)

English Meaning - study, trace, or represent the structure, activity, or connections of something in a clear and systematic way; chart, trace, analyse.

34.in ways (phrase)

English Meaning - in certain manners or methods; by means, in manners, in fashions, in respects.

35.most often (phrase)

English Meaning - in the majority of cases; usually, generally, frequently, typically.

36.in work (phrase)

English Meaning - referring to scientific or professional activities and research; in research, in studies, in projects, in tasks.

37.acknowledge (verb)

English Meaning - recognize, admit, accept.

38.honour (verb)

English Meaning - pay public respect to; recognize, celebrate, commend, acclaim.

39.rich (adjective)

English Meaning - abundant, productive, fruitful, copious.

40.collaboration (noun)

English Meaning - cooperation, partnership, teamwork, alliance.

41.advance (verb)

English Meaning - move forward in a purposeful way, or make progress; progress, further, improve, develop.

42.wonder (verb)

English Meaning - desire to know something or feel curious; ponder, question, speculate, be curious.

43.enable (verb)

English Meaning - allow, permit, empower, facilitate.

44.Chlamydomonas (proper noun)

English Meaning - a genus of single-celled green algae that can move towards light using a light-sensitive response; in the context of the article, Peter Hegemann studied Chlamydomonas to understand how light-sensitive proteins enable cells to respond to light.

45.single-celled (adjective)

English Meaning - consisting of a single cell; unicellular, one-celled, simple, mono-cellular.

46.alga (noun)

English Meaning - a simple, usually photosynthetic organism that typically lives in water or other moist environments; seaweed, kelp, aquatic organism, aquatic plant.

47.go on to (phrasal verb)

English Meaning - do something after completing something else; proceed, continue, advance, progress.

48.algal protein (noun)

English Meaning - protein obtained from algae, particularly from algae cultivated or processed as a source of nutrition or biotechnology products.

49.channel (noun)

English Meaning - a passage for water or ions to flow through; pathway, passage, duct, conduit.

50.charged (adjective)

English Meaning - having an electric charge; electrified, energized, ionised, loaded.

51.ion (noun)

English Meaning - an atom or molecule with a net electric charge; particle, charged particle, cation, anion.

52.electrical impulse (noun)

English Meaning - a brief wave of electrical excitation on the surface of a cell; signal, current, stimulus, surge.

53.practically (adverb)

English Meaning - virtually or almost; almost, virtually, nearly, essentially.

54.harmless (adjective)

English Meaning - safe, benign, innocuous, mild.

55.viral agent (noun)

English Meaning - a virus used as a vehicle to deliver genetic material into cells; viral vector, delivery vehicle, biological vector, viral carrier.

56.gene (noun)

English Meaning - a unit of heredity transferred from a parent to offspring; genetic code, DNA, hereditary unit, chromosome.

57.light-sensitive (adjective)

English Meaning - reactive to or affected by light; photosensitive, photo-reactive, light-responsive, phototropic.

58.pulse of light (noun)

English Meaning - a brief burst or flash of light; flash, burst, beam, gleam.

59.decade (noun)

English Meaning - a period of ten years; ten years, ten-year period.

60.laureate (noun)

English Meaning - awardee, winner, honouree, recipient.

61.reveal (verb)

English Meaning - disclose, unveil, uncover, expose.

62.neural circuit (noun)

English Meaning - a group of interconnected neurons that work together to perform a specific function; neural network, neural pathway, neuronal network, nerve circuit.

63.govern (verb)

English Meaning - control, regulate, direct, oversee.

64.memory (noun)

English Meaning - recollection, remembrance, recall, retention.

65.feeling (noun)

English Meaning - emotion, sentiment.

66.behaviour (noun)

English Meaning - conduct, manner, attitude.

67.relevant (adjective)

English Meaning - applicable, pertinent, related, germane.

68.neurological (adjective)

English Meaning - relating to the anatomy, functions, and disorders of nerves and the nervous system; neural, nervous, cerebral, neurobiological.

69.psychiatric disorder (noun)

English Meaning - a behavioral or mental pattern that causes significant distress or impairment; mental illness, mental disorder, psychological condition, psychiatric condition.

70.lay the groundwork (phrase)

English Meaning - to create a foundation or basis for something to happen or be developed; lay the foundation, set the stage, pave the way, prepare the ground.

71.clinical (adjective)

English Meaning - relating to the observation and treatment of actual patients; medical, therapeutic.

72.condition (noun)

English Meaning - an illness or other medical problem; illness, disease, disorder, ailment.

73.Alzheimer’s (proper noun)

English Meaning - a progressive neurodegenerative disease that destroys memory and other important mental functions, named after German psychiatrist Alois Alzheimer.

74.addiction (noun)

English Meaning - the condition of being addicted to a particular substance or activity; dependency, dependence, habit, obsession.

75.restore (verb)

English Meaning - bring back or re-establish, reinstate, bring back, repair.

76.sight (noun)

English Meaning - the ability to see or the sense of vision; vision, eyesight, visual ability, perception.

77.facilitate (verb)

English Meaning - make an action or process easy or easier; enable, assist, help, ease.

78.practical therapy (noun)

English Meaning - a treatment that is useful and effective in real-world situations; applicable treatment, pragmatic therapy, workable treatment, applied therapy.

79.diagnostic (noun)

English Meaning - a device, method, or system used for identifying a disease or condition; diagnostic test.

80.ameliorate (verb)

English Meaning - improve, enhance, better, alleviate.

81.irrespective of (phrase)

English Meaning - regardless of, without regard to, notwithstanding, ignoring.

82.station (noun)

English Meaning - one’s social rank or position; status.