Below is a detailed guide to its effects, benefits, risks, and limits.
1. What Happens When You Eat Baking Soda?
A. Short-term effects in the stomach
The stomach naturally contains hydrochloric acid to help digest food. When baking soda reaches the stomach, it reacts with this acid:
Sodium bicarbonate + stomach acid → salt + water + carbon dioxide gas
This reaction can cause:
- A feeling of relief from temporary heartburn
- Burping because carbon dioxide gas is produced
- Reduced stomach acidity for a short time
- Possible bloating or stomach discomfort
Example reaction:
NaHCO₃ + HCl → NaCl + H₂O + CO₂
The carbon dioxide gas is why some people burp after taking baking soda.
B. Possible benefits for occasional acidity
Small amounts of baking soda can act as an antacid by neutralizing excess stomach acid. It may temporarily help with:
- Occasional heartburn
- Acid indigestion
- Sour stomach
However, it does not treat the underlying cause of frequent acid reflux.
C. What happens if you take too much?
Taking large amounts can cause problems because baking soda contains a lot of sodium.
Possible effects include:
- Nausea
- Vomiting
- Abdominal pain
- Excessive thirst
- Swelling due to sodium retention
- Increased blood pressure in sensitive people
- Electrolyte imbalance
A serious problem called metabolic alkalosis can occur when the body becomes too alkaline.
Symptoms may include:
- Confusion
- Muscle twitching
- Weakness
- Irregular heartbeat
- Difficulty breathing
Large or repeated doses should not be used without medical advice.
2. What Happens When Baking Soda Is Used for Teeth?
Baking soda is sometimes used in toothpaste because it has mild cleaning properties.
Possible effects:
Removing surface stains
Its mild abrasiveness can help remove some surface stains caused by:
- Coffee
- Tea
- Tobacco
- Certain foods
Neutralizing acids
Because it is alkaline, it can reduce acids produced by bacteria in the mouth.
This may help reduce conditions that contribute to tooth decay.
Important limits for teeth
Using pure baking soda aggressively can cause problems.
Possible risks:
- Excessive scrubbing may wear enamel over time
- Gum irritation may occur
- It does not replace fluoride toothpaste
- It does not remove deep tooth discoloration
A safer approach is using toothpaste that contains baking soda rather than repeatedly brushing with large amounts of plain baking soda.
3. What Happens When Baking Soda Is Used on Skin?
Baking soda is sometimes used in homemade skincare products because of its alkaline nature.
Possible effects:
It may:
- Absorb some oil
- Reduce odors
- Provide gentle exfoliation
However, skin normally has a slightly acidic protective layer called the acid mantle.
Applying baking soda can raise skin pH and may disturb this balance.
Possible skin problems
Frequent use may cause:
- Dryness
- Irritation
- Burning sensation
- Redness
- Increased sensitivity
People with sensitive skin, eczema, or damaged skin barriers may react more strongly.
Avoid applying baking soda to:
- Open wounds
- Broken skin
- Irritated areas
4. What Happens When Baking Soda Is Used as Deodorant?
Baking soda can reduce odors because it can neutralize acidic odor compounds and absorb moisture.
Possible effects:
- Temporary odor reduction
- Less smell from sweat-related bacteria
However, it does not stop sweating because it is not an antiperspirant.
Some people develop:
- Underarm irritation
- Rash
- Itching
This happens because baking soda is alkaline and can disturb normal skin conditions.
5. What Happens When Baking Soda Is Used for Cleaning?
Baking soda is popular for household cleaning because it has several properties:
A. Odor absorption
It can help reduce smells by interacting with acidic odor molecules.
Common uses:
- Refrigerators
- Carpets
- Shoes
- Trash areas
B. Mild scrubbing action
Its small crystals provide gentle abrasion for:
- Sinks
- Stovetops
- Kitchen surfaces
C. Reaction with acids
When mixed with acidic substances like vinegar, baking soda produces:
- Carbon dioxide bubbles
- Water
- A salt
This fizzing action can loosen some dirt.
However, the bubbling does not automatically mean stronger cleaning power. Much of the reaction quickly turns the two substances into a neutral salt solution.
6. What Happens When Baking Soda Is Used in Cooking?
Baking soda is a chemical leavening agent.
When it reacts with an acid and moisture, it releases carbon dioxide gas.
This gas creates bubbles that help foods rise.
Examples:
- Cakes
- Cookies
- Pancakes
- Quick breads
Common acids that react with baking soda:
- Yogurt
- Lemon juice
- Vinegar
- Molasses
- Buttermilk
Too much baking soda in food
Excess baking soda can cause:
- Bitter or soapy taste
- Yellow or brown discoloration
- Unpleasant texture
- Excess sodium intake
Recipes require the correct balance between baking soda and acidic ingredients.
7. What Happens When Baking Soda Is Used for Exercise Performance?
Some athletes use sodium bicarbonate because it can temporarily increase blood buffering capacity.
During intense exercise, muscles produce acids that contribute to fatigue.
Baking soda may help some athletes during:
- Sprinting
- High-intensity intervals
- Short-duration intense efforts
Possible side effects:
- Stomach cramps
- Diarrhea
- Nausea
- Bloating
It should only be used carefully because doses used for sports are much higher than normal household amounts.
8. Baking Soda and Hair
Some people use baking soda as a shampoo alternative.
Possible short-term effects:
- Removes oils
- Makes hair feel cleaner
Possible long-term problems:
- Dryness
- Frizz
- Hair breakage
- Scalp irritation
Hair and scalp also have a natural pH balance, and repeated exposure to alkaline substances may disrupt it.
9. Who Should Be Careful With Baking Soda?
Extra caution is needed for people with:
- High blood pressure
- Heart disease
- Kidney disease
- Liver disease
- Sodium-restricted diets
- Pregnancy (especially with medicinal use)
- Children (unless advised by a healthcare professional)
Baking soda can affect sodium levels and acid-base balance.
10. Common Myths About Baking Soda
Myth 1: Baking soda cures all stomach problems
Reality: It may temporarily neutralize acid but does not cure ulcers, chronic reflux, or digestive diseases.
Myth 2: Baking soda detoxifies the body
Reality: The body already has organs such as the liver and kidneys that regulate waste removal. Baking soda does not “flush toxins.”
Myth 3: More baking soda means better results
Reality: Higher amounts increase the risk of irritation and health problems.
Myth 4: Baking soda whitens teeth permanently
Reality: It may remove some surface stains but does not change the natural color of teeth deeply.
11. Safe Everyday Use Guidelines
For household uses:
✅ Use small amounts
✅ Avoid inhaling baking soda powder
✅ Avoid applying it repeatedly to sensitive skin
✅ Keep it away from eyes
✅ Use food-grade baking soda for cooking or oral use
✅ Follow product instructions when using medicinal preparations
For health-related uses:
- Avoid frequent self-treatment
- Do not take large amounts for digestion or exercise without professional guidance
Summary Table
| Use | What Happens | Main Limit |
|---|---|---|
| Eating small amounts | Neutralizes stomach acid temporarily | Too much can disturb body chemistry |
| Teeth cleaning | Removes some surface stains | Overuse may irritate or wear enamel |
| Skin use | Absorbs oil and odors | Can dry or irritate skin |
| Deodorant | Reduces odor | Does not stop sweating |
| Cleaning | Absorbs smells and scrubs surfaces | Not a universal disinfectant |
| Cooking | Releases carbon dioxide to make food rise | Incorrect amounts affect taste |
| Exercise | May buffer muscle acids | Can cause stomach problems |
Bottom Line
Baking soda is a useful and versatile substance when used correctly. Its main effects come from its ability to neutralize acids, release carbon dioxide, and mildly absorb or scrub substances. Small everyday uses are generally safe for many people, but frequent or excessive use—especially inside the body or on skin—can cause unwanted effects. The key is using the right amount for the right purpose and understanding its limits.