TheLiverDoc™

1/2 Dear Friends, I never wanted to become a doctor. I always wanted to write and tell stories. And yet, over the years, medicine gave me the most extraordinary stories I could never have imagined - stories that lived in hospital corridors, outpatient rooms and inside terrifying ICUs; in the trembling hands of a father carrying his jaundiced daughter, in the silence between a prognosis spoken and a family's world shattered. Today, I am proud and deeply moved to announce my first book, The Liver Doctor: Stories of Love, Loss and Regeneration, published by @HarperCollinsIN . This book is where my two worlds finally collide. My childhood love for writing and telling stories. And my adultdhood, as a medical doctor. Through the lives of real patients and their families - their courage, their grief, their impossible choices - I tell the story of the most misunderstood, most indispensable, and only self-regenerating organ in the human body: the liver. But this is not just a medical book. It is a journey through ancient myth and modern science, through Prometheus and Wilson's disease, through Mesopotamian clay tablets and liver transplant waiting lists, through the history of healing itself. I wrote it for doctors, so they may remember why they chose this life. I wrote it for patients and families, so they may know when to fight and when to find peace. I wrote it for myself, to make peace with what I have lost and what I will lose. This book shoulders that one truth I have learned in all my years at the clinical bedside: I did not become a doctor to help people cheat death, but to help them understand it. This book is my offering - to medicine, to storytelling, and to you. Lose yourself in these pages, as I have. Pre-orders are open now The Liver Doctor : Stories of Love, Loss and Regeneration - amzn.in/d/0duTenmW

Oh kindly, pretty please, do respectfully fck off you pseudoscience grifting cult.

Scam went international where 99% of sales is expected. reuters.com/business/healthc…

Deepinder Goyal's supporters defending his Temple device against science critics.

"Liver doc is angry at Goyal cause device is named Temple..."

Yes. But offer only for Indian students. They can grow up to be great leaders with cult following, without completing any education whatsoever.

Hello friends, now that there are no more scientific updates from Deepinder Goyal on his scammy Temple device, I am moving on to completing my research papers this week. But I will keep a look out for any new "science" they bring so that I can simplify it for you. Long, but worth your time because you should know how science fraud blends beautifully into seemingly good science papers also. That said, Deepinder has uploaded various research papers on the Temple website. temple.com/science-and-resea… They have performed 4 studies on Temple. Three are in 'so-called' peer review (the trials are not even registered) and one is an internal white paper document from the company. The rest are "foundational research" - other published papers which Deepinder has used (exaggeratingly) to legitimize his device (deceitfully). Because the Temple "minions" are always citing from this webpage, I would like to clear the air on what the studies were done for and what was truly shown. This is for posterity. [1] Temple vs. Five Flagship Werables - Heart Rate Accuracy Study - This paper is an unreviewed, in-house white paper funded, run, and analyzed entirely by Temple Private Limited (with generative AI assisting in the analysis and drafting) rather than an independent clinical trial. The methodology was tilted in Temple's favor: the company compared its own 1-second internal app data stream against Apple Watch Series 12 and Oura Ring 5 data pulled from Apple Health exports that only logged once every 5 seconds, and it forced participants to wear four wrist devices at the same time - pushing half of them onto the lower wrist bone where motion errors are much worse (for example, WHOOP MG's error more than doubled from 2.00 bpm on the upper forearm to 4.58 bpm at the bottom wrist position) and then pooling those worse readings into the headline numbers. Deepinder also applied custom "in-house thresholds" to strip out "failure episodes" before calculating accuracy, tested only 43 young adults during a single indoor treadmill run while excluding darker skin tones and outdoor or non-running activities, and ultimately only showed that an optical sensor taped over a scalp artery can read pulse rate - which proves nothing about Temple's flagship claims of tracking brain blood flow, vascular aging, or metabolic "Entropy" - or even heart rate accurately. This was the study that Deepinder (in)famously told his team to promote as "success" in the Company Slack group. [2] Evaluating Brain Flow Index from a Temple-Worn Wearable (Deepinder had mentioned he would explain the technology behind it - but I dont think he understands his own paper, so I'll do it for him). This non-peer-reviewed preprint was designed, funded, and conducted by Temple (authored by company employees, founder Deepinder Goyal, and paid company consultants/advisers) on 44 young men completely excluding women because hair interfered with the reference headset. Neither device in the study actually measured brain blood flow: near-infrared spectroscopy (NIRS) only estimates hemoglobin concentration changes, and the "brain layer" reference was a mathematical guesswork from Temple Science Team, assuming every participant had an identical 8 mm flat slab of scalp and skull and a fixed 1.5-to-1 brain-to-scalp absorption ratio. The authors threw out the third optical time-of-flight moment (variance) measure - the exact measurement that truly provides the deepest tissue selectivity, because it produced "implausibly inflated" numbers, and they placed the NIRS reference on the opposite side of the forehead rather than under the Temple sensor, making it impossible to rule out local temple skin blood flow. To get their correlations (manipulated) right, they shifted the data by up to ±30 seconds per session to cherry-pick the best alignment, then used one-sided statistical tests without correcting for multiple comparisons, failed to find a statistically significant difference between brain and scalp correlations when lying down and never measured blood pressure, carbon dioxide, or breathing - meaning whole-body blood pressure rushes during inversion-table tilts and deep squats simply pushed blood into the head and moved both sensors together. Nothing about brain flow or its measurement is proven here. [3] Concordance Between a Temple-Worn Optical Wearable and Transcranial Doppler During Exercise and Postural Transitions. This non-peer-reviewed preprint funded by Temple Pvt. Ltd. and co-authored by a paid company consultant, tested only 20 analyzable young adults per protocol after dropping participants for movement-degraded recordings, and its own limitations section admits that the Temple Brain Flow index is "an extracranial optical signal whose cerebral component... the present protocols cannot isolate." Because vigorous cycling and lying flat drive blood into both the inner brain and the outer scalp skin at the same time, a surface skin sensor naturally rises and falls alongside Transcranial Doppler (TCD) ultrasound without ever penetrating to the brain. Furthermore, because Temple's closed-source algorithm outputs a unitless number rather than actual flow velocity (cm/s) or volume, the authors mathematically manipulated the scores. Even then, the timing between the two devices was erratic. Temple led the ultrasound by a median of 19 seconds during cycling but lagged behind by 9 seconds during posture shifts - while the devices were worn on opposite sides of the head, room temperature (25–30°C) and time of day were left uncontrolled despite skin blood flow reacting strongly to heat, beat-to-beat blood pressure were unrecorded, and Temple hid its LED-to-detector spacing so independent scientists cannot verify how deep its light actually reaches. [4] Temple PPG Morphology Demonstrates a Stronger Cardiovascular Age Signal Than Wrist Sites. Written entirely by three Temple employees and posted on pre-print without peer review, this study claims the temple is a better site than the wrist for detecting "cardiovascular age", but it never actually measured the temple and wrist on the same people. Instead, it committed a classic apples-to-oranges error by comparing an internal group of 126 mostly young men wearing a Temple sensor against a separate public dataset (Microsoft Aurora-BP) of 240 much older, gender-balanced people wearing a different wrist sensor, alongside an exploratory public fNIRS dataset of just 13 people where 88 of 89 features failed multiple-comparison correction. Worse still, the Temple sensor recorded pulse waves at a coarse 32 Hz while the wrist sensor recorded at 500 Hz, and both were artificially resampled to 75 Hz - even though resampling cannot recover high-frequency pulse details lost at 32 Hz, which heavily distorts the second- and third-derivative waveform ratios the paper relies on (and the raw Temple signal even came out upside-down, requiring manual sign inversion - again manipulation). Finally, the study excluded everyone over age 60, failed to show a statistically significant difference in overall feature "richness" between the temple and wrist (the confidence interval crossed zero), and never measured actual arterial stiffness or vascular health, merely correlating scalp pulse shapes with chronological birth age - andn othing more. [5] Assessing the Accuracy of Photoplethysmography for Wearable Heart Rate Monitoring Based on Body Location and Body Motion in Uncontrolled Outdoor Environments. This short 2024 conference abstract (no even a proper study) by Zurich researchers had nothing to do with the Temple wearable, brain blood flow, or vascular aging - and it did not even test the temple region. Rather than proving that a head-mounted sensor is ultra-accurate, the study found that even the forehead sensor suffered a 7.1% median error in real-world outdoor conditions (which equals roughly 10 to 13 bpm of error during exercise heart rates of 140–180 bpm, nearly ten times worse than the 1.18 bpm error Temple claims from its indoor treadmill test). Most importantly, the authors concluded that irregular real-world body motion degraded signal quality across all body locations far more than sensor placement helped, directly undermining Temple's marketing claim that putting an optical sensor on the head solves real-world motion artifacts. [6] Temporal Skin Temperature as an Indicator of Cardiorespiratory Fitness Assessed with Selected Methods. This 2022 Polish sports-science study in Biology did not use the Temple device or any wearable sensor at all; it used a stationary, non-contact infrared thermal camera from a distance in a 21°C lab to photograph the bare temple skin of 23 young men before and after a 3-minute cycling sprint. Using a remote thermal camera to justify a skin-taped wearable is physically flawed because sticking an adhesive plastic sensor onto the temple traps heat, blocks sweat evaporation, and ruins the natural radiative skin cooling and rewarming that the camera measured. Even more damaging to Temple's core premise, this paper explicitly explains that temple skin temperature rises after intense exercise because heat-dumping blood is shunted into the external carotid artery on the scalp while actual brain blood flow decreases to protect the brain from overheating - MEANING, this cited paper actually proves that blood flow and temperature at the surface of the temple move in the exact opposite direction of true brain blood flow during intense exercise. Everything opposite of what Deepinder claims. Now that you know there is nothing more than these fraudulent, manipulated, methodologically weak, AI written papers and falsified scientific data on Temple device, do not let them cite these papers again as proof. These are garbage worthy. The only way I see Temple device selling and succeeding is to remodel the device into the form of a leech and state that Ayurvedic principles of good and bad blood (ancient Jalauka Therapy - leech application) were applied as per Ayurveda texts and that the device measures primal energy imabalance as described in Ayurveda and Entropy is actually your Ayurvedic Doshas (without chutney). An example is shown below. Ayush Ministry will legalize, approve this and promote this (because those useless people are allergic to data and science) and 1% of the world and 99% of India will buy this scam-toy! I dont want royalties for this idea. Until the next fraud paper drops, goodbye and goodluck. Image courtesy: (at)drvarunacharya (Instagram)

Waiting for the "detailed note on how we calculate Brain Flow, its uses, and most importantly, its limitations in a bit." (Tomorrow) is almost over.

*I have been observing you* - you are my class monitor or what dmbass?

Friends, a word of warning. Now that Deepinder Goyal's Temple Device scam is out in the open, other so-called health influencers are trying to push their wellness devices as something better. Do not fall for this trap too. Take the example of Jitendra Chouksey's FITTR Hart Ring. This ring is marketed as a 24/7 "preventive health care" device that delivers accurate insights into cardiovascular health, recovery, stress, and sleep. In reality, it is an unregulated consumer wellness gadget that lacks regulatory medical approval, independent clinical trials, and validation against standard diagnostic protocols. FITTR HART Ring is neither cleared nor approved as a medical device by India's Central Drugs Standard Control Organisation (CDSCO) or the U.S. Food and Drug Administration (FDA). While its storefront promotions pitch it as a tool for "preventive health care", FITTR's own documentation quietly disclaimers that the ring is merely "a wellness device, not a certified medical instrument" and cannot be used for medical diagnosis or clinical decision-making. Exactly what Deepinder has pivoted his useless device to be currently. This is their modus operandi. Rather than being proprietary medical technology engineered from the ground up, the FITTR HART Ring (and its successor models) has been identified by smart-ring hardware analysts as a licensed, white-labeled version of mass-produced Chinese OEM rings manufactured by J-Style (Joint Chinese Ltd., specifically the JC 2301A/2301B and X1A01 series)—repackaged in a FITTR box and sold at a steep retail markup. Before any wearable can scientifically claim to measure physiological markers accurately, its hardware and algorithms must be tested in peer-reviewed human clinical trials against hospital-grade reference instruments. FITTR has published zero independent, peer-reviewed validation studies proving the HART Ring's accuracy against standard clinical benchmarks. FITTR Ring uses basic optical light sensors (photoplethysmography), a motion accelerometer, and a skin thermistor. These sensors do not directly measure "stress," "recovery," or "sleep stages". Instead, an unverified software algorithm combines movement and pulse fluctuations to generate arbitrary "readiness/recovery scores" and an "estimated hypnogram". (this is exactly what Deepinder's Temple device proprietory software does - it's all smoke and mirrors my friends) Early buyers even reported fundamental hardware and firmware flaws, such as the ring mistaking a blanket over the hand for its charging case and shutting off sleep tracking mid-night. Learn how to identify and detect a VULTURE in the modern era healthcare space!

Good morning. Deepinder Goyal is a liar. It was always about the brain, even though he now claims it was not. His scam was caught in January 2026 after which he started calling out doctors rudely at that time also. He mentioned he will show the science of brain flow, Entropy assessment by the device at the time. A few months later, he showed screen shots of what he calls the device can measure, which others cannot, called Entropy - screen shots from his own team - which can be easily made using Claude. Still no working device based proof. Zero evidence of parameters measured to showcase Entropy. Fast forward 10 months later, November 2026, he is still making the same claims, no new evidence, no real data other than what his company wrote on the website. The company website (temple.com) still promotes the device for cognitive health, brain tracking and entropy. I and other clinical-scientists HAVE gone through everyy detail of science published on Temple here temple.com/science-and-resea… and none of it proves this device can measure what it claims. Yes, heart rate and blood flow to the scalp from the temporal artery. But nothing more - because there is no data. Temple is a beautiful scam, built over the years using influencer network, paid celebrity collaboration (obviously all of these will be denied) and a false marketing to convince people that this device does more than any other device. It does not do anything beyond the basics. This is a global scam and the government regulators must assess the claims made before this becomes a circus show for the West. Guys like MKBHD and Mrwhosetheboss who can really do work on this will rip it apart - so go give them the device and not your local chamcha influencers.

Hello Ranveer, it is also prudent and ethical to disclose your interests. Ranveer Allahbadia (BeerBiceps) is an angel investor in Temple, the health-tech and AI wearable startup founded by Deepinder Goyal. While the exact decimal percentage of Ranveer Allahbadia’s personal equity is not publicly specified in regulatory breakdowns, he participated in Temple’s landmark $54 million seed funding round as a prominent angel investor. linkedin.com/posts/inc42_inc…

Stonewalling: The term for when someone refuses to communicate, answer questions, or cooperate after being confronted. -159 hours and 54 minutes have passed since the first fraud claim came up -90 hours and 22 minutes have passed since the first high quality scientific criticism came up -61 hours and 35 minutes have since the first deflective response to criticism came up -60 hours and 13 minutes have passed since second high-qaulity scientific criticism was posted online -60 hours and 16 minutes have passed since insulting clinician and scientists calling out the fraud -37 hours and 35 minutes have passed since any posts were made by the founder or his team Whoever is in charge, has specifically asked the founder to keep his mouth tightly shut because every single claim remain unfounded, every evidence provided of lowest quality, their website still promotes science fraud and their PR damage control has beautifully backfired.

Well, Professor Sanjeev Bagai is a BC Roy award winning Indian pediatrician, neonatologist, and pediatric nephrologist based in New Delhi, India. He is NOT an influencer or an influencer doctor that Deepinder Goyal claim others to be, who are trying to sabotage his humanity saving device. Prof. Bagai specifies that Temple Device sold for 85000/- rupees is actually not even worth calling a wellness or fitness device. All doctors cannot be on Twitter or on media doing this. But the few ones who are, including myself, speak for the ones who care about the public, and are rational, when we say, TEMPLE is India's original scam, like Elizabeth Holmes did it for Theranos and the USA. No doubts about it. It's basic foundational science is deadass. Like shipping a mummy from Egypt, calling it your Mama and waiting for it to respond.

There are many sciences. This is an India only thing because we are very high on science illiteracy and poor in critical thinking. 🌤️Standard science - Universal. The one that really helps humanity progress. 🔴Bro science - Jitendra Chouksey, Luke Coutinho 🔴Baba science - Ramdev and dalals 🔴Pseudoscience - Ayush Ministry 🔴Fringe Science - Huberman, Biohackers, Anti-aging, Longevity cults 🔴Bad science - Ayush + Standard Science (Eg - Integrative Medicine at AIIMS, NIMHANS etc), B M Hegde 🔴Delusional Science - Homeopathy 🔴Looks like science - Wellness industry 🔴Our Science - Traditional Medicine 🔴Your Science - Anything against Traditions

Goodmorning to you good people (not you Deepinder). Now that India has entered the commercial era of "scienceploitation", I would like to educate and inform the people on this topic, using one of Temple device's claims as an example. This is long, but stay with me, you will really benefit. But first, what is Scienceploitation? It is a marketing and communication tactic where brands, influencers, or media outlets borrow or manipulate language from legitimate, emerging areas of science (such as stem cell research, the microbiome, or epigenetics) to promote unproven health, wellness, or beauty products and services. The term was coined by @CaulfieldTim (I am honored to have known him and written an editorial with him in the BMJ), a professor of health law and policy at the University of Alberta. Temple Device is your first boss battle against scienceploitation. Let me explain this using their own biggest claim - ENTROPY. Temple claims it measures Entropy. What is entropy? In lay terms, entropy is a measure of how spread out, mixed up, or disorganized things naturally become over time. In human health, entropy can be a measure of disorder, wear and tear, and loss of organization in your body's cells, tissues, and organ systems. Low Entropy = High Health (Order): A young, healthy body is in a state of low entropy. Your cells are communicating well, your DNA is intact, your proteins are folded properly, and your heartbeats have a smooth, adaptable rhythm. High Entropy = Disease or Aging (Disorder): As entropy increases, biological "mess" builds up. Damaged DNA accumulates, proteins misfold, cells stop working right, and communication breaks down. Aging is essentially a slow, natural rise in entropy. While conditions like cancer (uncontrolled, chaotic cell growth), neurodegeneration (like Alzheimer’s protein tangles), and metabolic dysfunction (like uncontrolled blood sugar) represent spikes of high entropy in specific parts of the body. Note that - aging is a normal anatomical and physiological process, it is not a disease. Now you know how complex this term is? Well, this is what Deepinder Goyal's Temple device claims to measure. A device can produce a number without proving that the number means what its advertising says. That is the central problem with Temple’s “Entropy.” “Entropy” has different scientific meanings. In physics, it concerns energy transformations. In heartbeat or brainwave analysis, it describes how irregular or unpredictable a signal is. Measuring one does not mean you have measured the other, or someone’s overall health. Yes, wearable recordings can be used to calculate signal entropy. A Polar H10 chest strap, for example, records heartbeat intervals that suitable software can analyse. GE’s clinical Entropy monitor analyses electrical signals from the forehead to help assess anaesthesia. Neither tells you how much “disorder” your body contains or how long you will live. Temple’s published research describes an optical sensor that shines light into skin and detects changes associated with blood flow. That can provide useful physiological information of flow and perfusion only there or at the heart level, but not the brain or other systems. And detecting blood-related signals does not automatically measure whole-body heat loss, metabolism or thermodynamic entropy. Those claims are wild. Extraordinary claims require extraordinary evidence. Researchers have estimated human thermodynamic entropy production. The experiment cited by Temple used a whole-body calorimeter, measurements of breathing gases and mathematical modelling. It did not demonstrate that a small optical sensor at the temple could do the same job. Misrepresenting and misinterpreting genuine research and extrapolating that to a new device does not establish that Temple performs the measurement described in that research - this is classical Scienceploitation. It Is "sciencey" word salads. Non-medical people will fall for this sort of gimmicks. Temple also claims that lower resting “Entropy” means better health. That is not an established universal rule. Even the theoretical paper it cites discusses the importance of maintaining adequate entropy production and increasing it when needed—not simply driving the resting value ever lower. A lower number needs a proven health meaning before it becomes a health goal. Deepinder's Science Team has to prove this first, before they let their "machine" measure it - if it really can. A reading that changes with exercise, meals, stress or temperature may be responding to real physiology. But that does not prove it measures immune health, digestion, reproductive function or recovery. Responding to many things is not the same as understanding or measuring all those things. Temple lists (their own) preliminary studies of heart rate and brain-circulation-related signals. Those studies do not establish the advertised health meanings of “Resting Entropy,” “Entropy Max” or “Span.” These cannot be measured using currently available wearable tech, including Temple. Combining readings into a new score does not remove the need to validate that score, or if the score is really meaningful to start with. Pretty much like Homeopathy. So much stuff, no content or context. Highly advanced wearable science is not impossible. The problem is presenting an unvalidated interpretation as an established fact about your body. Calling a product “wellness” does not make its scientific claims true. Temple device is the commercial, expensive example of consumer scienceploitation. The website needs to be updated with medical and health truths rather than magical thinking and delusions of so-called founder and his science team. Deepinder's Temple device is very much like Baba Ramdev's Coronil. Only one difference. Former is scienceploitation, latter is pseudoscience and both are harmful in their own ways. Learn to identify a scam and fraud when you see one.

Deepu: Guys! We made a wearable that can track your brain activity in real time! Just place it on your temple. Doctors: Wow! Damn cool bro. Show us how it works! We are interested! Deepu: Ehhh...why you raging!!?? It's actually a fitness tracker. Doctors: Oh! That's ok. We anyway need one from India! All the ones now are by the West! Go India! How does it stack up to the current cheaper validated wearables though? Deepu: