Deepinder Goyal Explains Latest Brain Monitoring Sensor Device - Temple, after Social Media Speculation

Temple is being developed under Goyal’s personal research initiative, Continue Research, where he has committed $25 million of his own funds.

Eternal CEO Deepinder Goyal’s appearance on Raj Shamani’s YouTube podcast has sparked widespread curiosity after viewers noticed a small device attached to his temple, triggering a wave of speculation across social media platforms.

The device, known as Temple, is an experimental tool designed to continuously measure blood flow in the brain in real time. The small gold- or silver-coloured sensor is worn near the temple and tracks cerebral blood flow, a key indicator of neurological health and ageing.

Temple is being developed under Goyal’s personal research initiative, Continue Research, where he has committed $25 million of his own funds.

It is not a Zomato product and is being developed privately under Eternal. The device is not available for public or commercial use.

The research behind Temple is linked to what Goyal calls the Gravity Ageing Hypothesis. In November 2025, he publicly shared his views on gravity’s role in ageing, writing, “I’m not sharing this as the CEO of Eternal, but as a fellow human, curious enough to follow a strange thread. A thread I can’t keep with myself any longer.”

He added, “It’s open-source, backed by science, and shared with you as part of our common quest for scientific progress on human longevity,” before stating, “Newton gave us a word for it. Einstein said it bends spacetime. I am saying gravity shortens lifespan. Read on, and tell me what you think.”

The hypothesis suggests that gravity gradually reduces blood flow to the brain, contributing to brain ageing. Since the brain sits above the heart and humans spend most of their lives upright, gravity continuously pulls blood downward, potentially affecting circulation over decades.

According to the research shared by Goyal, reduced blood flow may weaken ancient brain regions such as the hypothalamus and brainstem, which regulate breathing, heart rate, hormones, immunity and body temperature, leading to faster ageing of the body.

Goyal has said the idea was tested over two years through research and discussions with doctors and scientists worldwide, with no strong scientific contradiction identified so far. The research also references bats, yoga inversions and human height as factors potentially linked to gravity’s effects on blood circulation.

While Temple has drawn both interest and criticism online, the device remains positioned as an experimental research tool aimed at testing neurological and ageing-related hypotheses, rather than a consumer health product.

Stay tuned for more such updates on Digital Health News