Andrew Huberman, Ph.D.@hubermanlabTikTok

Can diet soda help with weight loss? @thealanaragon #hubermanlab #andrewhuberman …more

original sound — @hubermanlab

what it claims

Diet sodas (artificially sweetened or sweetened with stevia) are an effective tool for weight and fat loss, sometimes proving to be more helpful than water alone for reducing caloric intake.

holds up

Andrew Huberman's assertion is based on solid scientific data. A meta-analysis of randomized controlled trials (RCTs) published by Rogers et al.

noli's read

Andrew Huberman's assertion is based on solid scientific data. A meta-analysis of randomized controlled trials (RCTs) published by Rogers et al. confirms that replacing sugar with sweeteners helps reduce energy intake and body weight. More surprisingly, the randomized clinical trial by Peters et al. (the SWITCH trial) compared water to sweetened beverages and observed slightly greater weight loss in diet soda drinkers, likely due to better overall adherence and satisfaction of the sweet taste without the calories. Although observational studies sometimes associate sweeteners with weight gain, this link is often attributed to reverse causality. Thus, interventional research fully supports the utility of these beverages for optimizing one's physique.

the sources

Claimed by Andrew Huberman, Ph.D. Noli grades the claim, never the person.

Decoded by Noli · July 14, 2026 · the original post

What the graded evidence says

Effect: body weight (RCTs, sweetener replacing sugar) vs long-term outcomes (WHO systematic review) — small average weight reduction (~1 kg) when swapping sugar for sweeteners in short-term RCTs; no sustained body-fat benefit long term, with observational associations to higher T2D and CVD risk
Measured on: adults and children; general population

The short-term weight edge is real but small; the long-term concerns (T2D, cardiovascular) are observational and can't prove cause. The aspartame 'possible carcinogen' label reflects limited evidence at very high exposure, not everyday-can risk. Reasonable people can disagree, hence WHO's recommendation is conditional.

Andrew Huberman, Ph.D. in the Register144 claims graded · solidity 82/100See their record →