Apple cider vinegar and baking soda have been promoted as household remedies for weight loss, clearer skin, and other health concerns. Evidence for their combined use remains limited, and in some cases, the risks may exceed the benefits.
Acid reflux relief: one ingredient helps, the other does not
Sodium bicarbonate, commonly known as baking soda, works as a short-term remedy for acid reflux. Its alkaline pH neutralizes stomach acid, offering quick relief for episodes lasting up to two weeks. A typical at-home method involves mixing half a teaspoon of baking soda with half a cup of water. Many over-the-counter antacids contain the same active ingredient, and the method is considered safe for most non-pregnant adults.
Apple cider vinegar, despite its online popularity, lacks scientific support for acid reflux relief. Some claims suggest it may help by increasing stomach acid, but no studies confirm this effect. Mixing the two ingredients provides no additional benefit and could reduce baking soda’s effectiveness. For now, using baking soda alone remains the simpler and safer option.
Hair and skin: uncertain benefits and possible damage
The high acidity and antifungal properties of apple cider vinegar make it a popular DIY hair treatment. Users report shinier, cleaner strands, though research on its effectiveness is sparse. Baking soda presents a different issue. Its alkaline pH can harm hair cuticles, leading to breakage and frizz. Shampoos with acidic formulas tend to work better, reducing tangles and static.
For skin, baking soda appears in some cosmetic products at safe levels, but homemade remedies—such as baths combining baking soda and apple cider vinegar—lack strong evidence. While Epsom salts may soothe irritation, the combination has not been thoroughly tested. Apple cider vinegar shows antimicrobial potential in lab studies, but applying it directly to skin risks chemical burns.
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If the goal is healthier hair or skin, caution is advised. Baking soda’s risks may outweigh its unproven benefits, and apple cider vinegar’s advantages remain largely anecdotal.
Weight loss claims lack strong evidence
Neither baking soda nor apple cider vinegar has reliable evidence supporting their use for weight loss. Human research is limited, with no credible studies showing baking soda aids fat loss.
Apple cider vinegar has slightly more research but still falls short. Some animal research showed reduced food intake and improved glucose tolerance, but human results were inconsistent. While daily vinegar consumption might offer minor health benefits, the evidence is not strong enough to recommend it for weight loss.
Combining the two ingredients does not improve outcomes. No studies support the idea that a baking soda and apple cider vinegar drink accelerates fat loss. The most reliable approach to maintaining a healthy weight remains a balanced diet, regular exercise, and adequate sleep.
Those who still wish to try apple cider vinegar should limit intake to two tablespoons of commercial vinegar diluted in water. Baking soda should be used sparingly, mixed in a 1:1 ratio with water, and only for short-term acid reflux relief. Beyond these uses, the risks increase.
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Side effects and safety concerns
Baking soda is generally safe in small amounts, but overuse can lead to complications. Consuming too much may cause constipation, diarrhea, muscle spasms, or heart rhythm disturbances. A 2013 case study described a man who developed abnormal heart rhythms after years of self-treating heartburn with baking soda. Another case involved severe metabolic alkalosis after using baking soda to manage reflux.
Apple cider vinegar also carries risks. Undiluted vinegar can burn the esophagus, as seen in a 2020 case where a teenager suffered corrosive injuries after drinking it daily. The nausea some users experience may stem from its harshness rather than any appetite-suppressing effect. Topical use is not risk-free either; undiluted vinegar can cause chemical burns.
For most people, the safest approach is to use these ingredients separately. Baking soda has a clear, if limited, role in managing short-term acid reflux. Apple cider vinegar might offer minor benefits for hair or digestion, but the evidence remains inconclusive. Combining them does not provide additional advantages and introduces more variables without proven benefits.
Quick fixes often promise more than they deliver. Until further research emerges, moderation and caution remain the best practices.
