Drinking Baking Soda For Weight Loss: Does It Work? - Healthline

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Evidence BasedCan Drinking Baking Soda Help You Lose Weight?

Medically reviewed by Alissa Palladino, MS, RDN, LD, CPT — Written by Alina Petre, MS, RD (NL) — Updated on May 12, 2025

Research
Preparations
Safety
Bottom line

Drinking water with baking soda may have minor indirect effects on weight loss. But consuming too much can also cause side effects.

Baking soda is known for its wide array of uses, from deodorizing your refrigerator to whitening your teeth. Weight loss is one of its latest purported benefits.

Some people suggest diluting baking soda in water, apple cider vinegar, or lemon juice and drinking it on an empty stomach to help you shed excess weight. Others suggest simply soaking in a baking soda bath.

This article explores whether baking soda offers any weight loss benefits and the potential risks associated with ingesting baking soda concoctions.

What does the research say about baking soda and weight loss?

Claims abound that baking soda, when combined with water, apple cider vinegar, or lemon juice, is especially effective at helping you shed excess body fat. However, there’s little science to back this up.

Debunking popular claims and theories

Baking soda is touted to have alkalizing effects on the body, which are commonly believed to promote weight loss or prevent weight gain. However, this theory has been debunked time and time again.

That’s because your body uses tightly regulated processes to control its pH levels, and what you eat or drink has little influence on them.

Another theory suggests that adding baking soda to your bathwater will help you lose weight by replenishing your levels of magnesium and sulfate, two nutrients touted to boost your metabolism and eliminate toxins. Yet, this theory is not backed up by science either.

However, baking soda might soothe an upset stomach, as it has the ability to neutralize stomach acid.

This chemical reaction creates carbon dioxide, which is a gas that can cause you to burp. While this may give you a feeling of a lighter stomach, it has no direct influence on your total body fat.

Minor, indirect effects may be possible

Baking soda may have an indirect weight-loss-promoting effect, mainly due to the liquid you choose to mix it with.

One popular option is to mix baking soda with apple cider vinegar, a liquid that research published in 2014 shows may help you feel less hungry. However, recent studies supporting apple cider vinegar’s weight loss effects are limited.

Baking soda is often diluted in water, either alone, or together with apple cider vinegar or lemon juice.

When consumed daily, such beverages may result in larger daily fluid intake. This may improve your overall hydration levels, an effect that studies suggest may reduce hunger, increase metabolism, and promote body fat loss.

It’s important to note that these possible weight-loss-promoting effects have little to do with baking powder and more to do with other liquids. Adding baking soda to the mix appears to offer few additional benefits.

Preparation methods

There are three popular methods that people use to incorporate baking soda into their daily routines.

The first involves diluting 1/2 teaspoon of baking soda in 1–2 cups (240–480 mL) of water and drinking this concoction on an empty stomach whenever it’s most convenient during the day.

The second requires mixing 1 teaspoon of baking soda with 2 tablespoons (30 mL) of apple cider vinegar or lemon juice. Once this mixture has stopped releasing gas, you can dilute it in water and drink it on an empty stomach.

Diluting is important to avoid throat burns or eroding your tooth enamel, as the exact acidity is unknown.

An alternative way to integrate baking soda to your regimen without ingesting it is to dilute 3–4 cups (662–883 grams) of baking soda in a bathtub full of water prior to soaking in it.

Keep in mind that neither of these preparation methods’ safety is backed by science, so use them at your own risk.

Is it safe?

Excess intake of baking soda is associated with a range of side effects.

Metabolic alkalosis

Consuming large amounts of baking soda can be dangerous, as it may cause metabolic alkalosis, a life threatening condition that occurs when your body is no longer able to control the pH of your blood.

Metabolic alkalosis can result from an excess intake of alkali compounds, such as baking soda, and cause muscle weakness, spasms, an irregular heartbeat, and an altered mental status. If left untreated, it can be deadly.

High blood pressure and other health effects

Baking soda tends to be high in sodium. As such, high intakes of baking soda may cause fluid accumulation or heart failure in some people. People with alcohol use disorder or compromised kidney function should be especially careful.

Baking soda may also cause breathing difficulties and seizures in young children, and it should not be given to children under 5 years old. People who are pregnant or breastfeeding may also benefit from avoiding its intake.

Combining baking soda with an acid, such as apple cider vinegar or lemon juice, causes a chemical reaction that releases carbon dioxide gas. This may result in gas or bloating, especially if you ingest the mixture before all the gas has escaped.

Medication interactions and long-term safety

Baking soda may interact with certain medications. People currently taking medications should consult a healthcare professional before adding baking soda to their diet.

Finally, there’s currently little information about the long-term safety of ingesting baking soda, either alone or in combination with lemon juice or apple cider vinegar. Therefore, it may be safest to avoid such mixtures until more research emerges.

Soaking in a bathtub containing baking soda may be safer than ingesting it. However, no studies have researched the benefits or risks associated with this practice.

The bottom line

Baking soda is touted to help you lose weight, but there’s no scientific evidence backing this claim.

Ingesting large amounts of baking soda diluted in water, apple cider vinegar, or lemon juice is associated with multiple potential health risks. Moreover, little is known about the long-term safety of ingesting these concoctions.

Therefore, it’s likely safest to avoid consuming this mixture until more research emerges.

How we reviewed this article:

SourcesHistoryHealthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

Al-Abri SA, et al. (2013). Baking soda can settle the stomach but upset the heart: Case files of the medical toxicology fellowship at the University of California, San Francisco.https://pmc.ncbi.nlm.nih.gov/articles/PMC3770998/
Darzi J, et al. (2014). Influence of the tolerability of vinegar as an oral source of short-chain fatty acids on appetite control and food intake.https://pubmed.ncbi.nlm.nih.gov/23979220/
De Lusong MAA, et al. (2017). Management of esophageal caustic injury.https://pmc.ncbi.nlm.nih.gov/articles/PMC5421115/
Hu MK, et al. (2019). Oral bicarbonate therapy in non-haemodialysis dependent chronic kidney disease patients: a systematic review and meta-analysis of randomised controlled trials.https://pmc.ncbi.nlm.nih.gov/articles/PMC6406285/
Jensen S, et al. (2014). [Self-treatment with baking soda can lead to severe metabolic alkalosis].https://pubmed.ncbi.nlm.nih.gov/25497637/
PubChem compound summary for CID 516892, sodium bicarbonate. (2025).https://pubchem.ncbi.nlm.nih.gov/compound/Sodium-bicarbonate
Stookey JJD. (2016). Negative, null and beneficial effects of drinking water on energy intake, energy expenditure, fat oxidation and weight change in randomized trials: A qualitative review.https://pmc.ncbi.nlm.nih.gov/articles/PMC4728633/
Sur M, et al. (2024). Alkalosis.https://www.ncbi.nlm.nih.gov/books/NBK545269/
Thornton SN. (2016). Increased hydration can be associated with weight loss.https://pmc.ncbi.nlm.nih.gov/articles/PMC4901052/

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Evidence Based

This article is based on scientific evidence, written by experts and fact checked by experts.

Our team of licensed nutritionists and dietitians strive to be objective, unbiased, honest and to present both sides of the argument.

This article contains scientific references. The numbers in the parentheses (1, 2, 3) are clickable links to peer-reviewed scientific papers.

Medically reviewed by Alissa Palladino, MS, RDN, LD, CPT — Written by Alina Petre, MS, RD (NL) — Updated on May 12, 2025

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