• David Steuer

Want to lose weight? Try drinking waste water from cooking sweet potatoes, scientists say

Updated: Mar 28, 2019



  • Japanese researchers found proteins in the starchy water suppress appetite

  • It contains sweet potato peptide which is produced during the boiling process

  • After 28 days, mice fed high levels of the protein were found to have lost weight

  • Experts say the results could be replicated in humans

Many of us have tried weight loss methods that promise instant results - but now scientists claim a miracle slimming aid could be right in front of us, potentially spelling the end of controversial diets.

New research concludes that drinking the leftover water from boiling sweet potatoes could help to keep a slender figure.

Proteins in the starchy waste suppress appetite in mice, but experts say the findings could be replicated in humans.

Japanese researchers fed two groups of mice high fat diets, giving one higher levels of sweet potato peptide (SPP) - produced by enzyme digestion of proteins in the water during the boiling process.

After 28 days the animals were weighed and their liver mass and fatty tissue levels measured. Cholesterol and triglyceride levels were also taken, as well as leptin, which controls hunger.


Lead researcher Dr Koji Ishiguro said: 'We throw out huge volumes of waste water that contains sweet potato proteins.

'We hypothesised that these could affect body weight, fat tissue and other factors.

'Finding alternative uses for the sweet potato proteins in wastewater could be good for the environment and industry, and also potentially for health.'

He concluded: 'We were surprised that SPP reduced the levels of fat molecules in the mice and that it appears to be involved controlling appetite suppression molecules.

'These results are very promising, providing new options for using this wastewater instead of discarding it.

'We hope SPP is used for the functional food material in future.'

It is unsure how much SPP the mice were given during their 28 day period.

However, it is believed the findings could ring true in humans due to mice being very biologically similar. But the researchers were keen to point out that further research is needed to determine the link.

The study was published in the journal Heliyon.


#weightloss #diet #leptin #appetitesuppressant

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This content is strictly the opinion of Dr. David Steuer and is for informational and educational purposes only. It is not intended to provide medical advice or to take the place of medical advice or treatment from a personal physician. All readers/viewers of this content are advised to consult their doctors or qualified health professionals regarding specific health questions. Neither Dr. Steuer nor the publisher of this content takes responsibility for possible health consequences of any person or persons reading or following the information in this educational content. All viewers of this content, especially those taking prescription or over-the-counter medications, should consult their physicians before beginning any nutrition, supplement or lifestyle program.

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