TheLiverDoc takes another dig at Deepinder Goyal over promised ‘detailed note’ on Temple’s Brain Flow feature

Indian hepatologist and social media personality Cyriac Abby Philips, popularly known as TheLiverDoc, has taken another sarcastic swipe at Eternal founder Deepinder Goyal over his promised explanation of the Brain Flow feature in his controversial wearable device Temple.

In a post on X on Monday, TheLiverDoc questioned the delay in publishing the detailed note that Goyal had promised a day earlier. The Zomato founder had posted on X on Sunday, saying that he would share a note on how Temple calculates Brain Flow, its applications and also its limitations.



The post comes amid an ongoing public spat between Goyal and sections of the medical community over the scientific evidence supporting Temple's claims, particularly its ability to measure changes in blood flow to the brain.

The Temple controversy

Temple, a wearable developed by Goyal's startup, has faced criticism from doctors and researchers over its claims around its metrics. Many people on social media have also criticised Goyal for not properly disclosing the scientific methodology and validation behind the company's research.

The device, selling at a whopping Rs 85,000 in India, has faced further criticism over its pricing and positioning, especially after Goyal said that it is not meant for Indian people.

Earlier in the day, TheLiverDoc claimed that Goyal had shared screenshots, allegedly from his own team, to illustrate the device’s ability to measure entropy, a capability he claims other devices cannot offer. He further stated that such screenshots could easily be created using the artificial intelligence model Claude, and said Goyal had yet to provide any evidence from a working device or demonstrate the actual parameters being measured to substantiate the entropy claims.

The doctor further said that he and other clinical scientists had examined the scientific material published on Temple’s website but found no evidence to substantiate its claimed capabilities. Apart from measuring heart rate and blood flow to the scalp through the temporal artery, he argued, there was no data to support any claims beyond these parameters.


Meanwhile, Goyal has defended himself against allegations of a scam, saying he has invested significantly in developing the product and that no one would put so much money into something just to scam people.

“Nobody is forcing you to buy. Making announcements is our right; and if we overclaim anywhere, we will inevitably fall into regulatory trouble everywhere in the world,” Goyal had said in a series of posts on Sunday.