A heated debate has erupted online after Dr Datta, a physician-scientist from AIIMS Delhi, strongly criticised Zomato Founder Deepinder Goyal’s new health-tech device, “Temple.” The controversy began when Goyal wore the device on Raj Shamani’s The Figuring Out Podcast, drawing attention to his latest venture into the medical technology space.
Dr Suvrankar Datta, an AI researcher and radiologist with clinical training from AIIMS Delhi, has dismissed the device worn by Goyal as unscientifc. “As a physician-scientist and one of the earliest researchers in India in Arterial Stiffness and Pulse Wave Velocity (2017) which predicts cardiovascular mortality, I can assure you that this device currently has 0 scientific standing as a useful device and do not waste your hard earned money to buy fancy toys billionaires can afford to waste money on. If you are one, then go ahead”, wrote Dr. Datta on X.
He expanded on his concerns in a thread, stating, “Also, mai hawa mein baat nahi karta, guys! We have tried variety of stuff in 2018, including trying to use AI for interpretation. On the basis of our research we applied for the Indian Innovation Growth Programme, and went to the Finals.”
In November 2025, Deepinder Goyal, founder and CEO of Zomato, shared what he called the “Gravity Aging Hypothesis.” In this idea, he suggested that gravity might slowly reduce blood flow to the brain over a lifetime, and that reduced brain blood flow could contribute to ageing.
The device at the centre of the debate, called “Temple,” is a specialised health-tech wearable developed by Deepinder Goyal, marking his entry into the deep-tech and medical research space. First revealed in December 2025, Temple aims to provide real-time, continuous monitoring of brain blood flow. Goyal’s ‘Gravity Aging Hypothesis’ had met with similar criticism from several doctors — including Dr Cyriac Philips, aka The Liver Doc.
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