Old person smell—the term may sound crude, but it’s based in real science. Researchers have identified a chemical compound called 2-nonenal that causes the distinct body odor associated with aging. Fortunately, new evidence suggests you may be able to reduce this smell through diet—especially by eating certain types of mushrooms.
What Causes Old Person Smell?
The key culprit is a compound called 2-nonenal, identified in a 2001 study published in the Journal of Investigative Dermatology. This greasy, grassy-smelling aldehyde was found only in people aged 40 and over—not in younger adults.
How it forms:
- Skin lipids naturally contain omega-7 unsaturated fatty acids like palmitoleic acid
- With age, these fatty acids undergo oxidative degradation, especially in the presence of lipid peroxides
- The result is the formation of 2-nonenal—a sticky, lingering odor compound associated with aging
As we age, our skin's antioxidant defenses weaken, lipid peroxides increase, and the oxidative chain reaction that creates 2-nonenal accelerates—especially in those over 70 or 80.
Mushrooms: The Natural Deodorizer Backed by Science
A 2015 clinical study published in the Journal of Traditional and Complementary Medicine tested the effects of champignon (white button) mushroom extract on body odor and halitosis in people aged 50–79. After just 4 weeks, participants taking 500 mg of the extract daily experienced significant reductions in unpleasant body and fecal odors, without any adverse effects.
Why Mushrooms Work
Certain mushrooms are rich in powerful antioxidants that help protect skin cells from the oxidative stress that triggers 2-nonenal production. These include:
- Ergothioneine – A rare amino acid with strong protective effects on skin and liver tissue
- Spermidine – A natural compound that supports cellular cleanup (autophagy) and may delay aging
Best Mushrooms to Add to Your Diet
While the clinical study focused on champignon extract, other mushrooms are even richer in these antioxidant compounds:
- Shiitake – High in ergothioneine and beta-glucans
- Oyster mushrooms – Anti-inflammatory and antioxidant-rich
- Maitake – Supports immune function and cellular detox
- Portobello – A hearty, antioxidant-rich staple
How Much Mushroom Do You Need?
According to the 2015 study, participants took:
- 500 mg of champignon extract per day
If you're using real food instead of a supplement, aim for:
- 2–3 servings of cooked mushrooms per week
- Each serving = about ½ to 1 cup of cooked mushrooms
For daily use, a capsule-based extract may offer more concentrated benefits, especially for those over 60 or with digestive concerns.
Other Natural Remedies That May Help
While mushrooms are the standout solution, other natural supplements and lifestyle strategies may also help reduce body odor as you age:
1. Activated Charcoal
- Binds to toxins and odor-causing compounds in the gut
- May reduce odor from within, though not directly linked to 2-nonenal
- Take 500–1000 mg per day away from meals and medications
2. Chlorophyll or Liquid Chlorophyllin
- Acts as an internal deodorizer
- Used for decades in long-term care settings to reduce odor
- Start with 100 mg daily, increase slowly if needed
3. Zinc and Magnesium
- Support enzyme function and reduce skin irritation
- May help normalize body odor in people with deficiencies
4. Probiotics
- Restore gut flora balance, reducing waste byproducts that contribute to odor
- Look for broad-spectrum, refrigerated blends
5. Antioxidant-Rich Foods
- Berries, green tea, turmeric, and leafy greens reduce systemic oxidation
- Support skin and liver detox pathways
Final Thoughts
“Old person smell” may be a normal part of aging—but it doesn’t have to be inevitable. Adding antioxidant-rich mushrooms to your weekly routine—or using a mushroom extract supplement—may significantly reduce unpleasant odors by targeting their root cause: oxidative damage to skin lipids.
For an extra boost, consider combining mushrooms with activated charcoal, chlorophyll, and other natural detoxifiers. These remedies not only support a fresher scent but contribute to better overall aging from the inside out.
Always consult with your healthcare provider before starting new supplements, especially if you’re on medication or managing a chronic condition.
Watch Our Video
Learn more in our quick video: “Smell Younger with Mushrooms: Natural Fix for Old Person Smell”—featuring the science, the foods, and the dose that works.
Please let us know if you have a tried-and-true remedy for age-related body odor!
