The musty, cardboard-like scent often associated with older adults is widely recognized and just as widely misunderstood. Commonly referred to as “old people smell,” this odor isn’t a result of poor hygiene or a specific perfume — it's rooted in biology. As people age, their skin undergoes changes that make this scent more pronounced and persistent.

This distinct smell is caused by a compound called 2-nonenal, which forms on the skin due to lipid peroxidation — the process where fats in the skin oxidize. As antioxidant levels decline with age and cellular turnover slows, these oxidized fats accumulate on the skin's surface. The result is a lingering odor that isn’t easily washed away or masked with fragrance.

Why the Scent Lingers With Age

As the body ages, hormonal shifts and slower skin renewal contribute to the buildup of oxidized lipids. The body's ability to shed old cells and regenerate new ones becomes less efficient, making it harder to naturally eliminate the compounds responsible for the odor.

Additionally, typical cleansing methods like bathing or using deodorants don’t effectively break down the fatty acids responsible for the scent. This is why the smell can persist despite maintaining good hygiene.

The Role of 2-Nonenal and Lipid Peroxidation

The key culprit behind this age-related body odor is 2-nonenal, a byproduct formed when omega-7 fatty acids in the skin oxidize. This process, called lipid peroxidation, is essentially the skin’s version of rusting. Without sufficient antioxidant protection, especially as one ages, this oxidation accelerates.

Unlike typical body odor, which is caused by bacteria breaking down sweat, 2-nonenal comes from within — which means it can't be scrubbed off or covered with perfume. In fact, adding perfume often results in a more musty combination rather than eliminating the smell.

How Mushrooms Can Help from the Inside Out

The most effective way to address this odor is not external but internal — by targeting its root cause through nutrition. Enter mushrooms: a powerful superfood that offers several age-defying benefits.

Mushrooms are especially rich in ergothioneine, a unique amino acid and antioxidant that can halt lipid peroxidation before it leads to odor formation. Ergothioneine also has anti-inflammatory properties, helping the skin stay healthier and more resistant to oxidative damage.

Additionally, mushrooms contain spermidine, a natural compound that supports autophagy, the body’s internal “clean-up” system. Autophagy breaks down and recycles damaged cell components, promoting cell renewal and helping maintain healthier skin — and in turn, reducing the scent associated with aging.

The Best Mushrooms for the Job

While all mushrooms contribute positively to health, certain varieties are more potent when it comes to fighting age-related odor. Shiitake and oyster mushrooms stand out for their high levels of ergothioneine and spermidine, making them particularly effective in targeting the root causes of 2-nonenal buildup.

These mushrooms not only support better skin health but have also been linked to a lower risk of cognitive decline and chronic disease. Their benefits extend beyond odor prevention, offering immune support, cancer-fighting properties, and improved metabolic health.

More Than Just Odor Control

Incorporating mushrooms into the diet offers a range of age-related health benefits. In addition to curbing the development of the so-called “old people smell,” mushrooms have been found to:

• Lower blood pressure
• Improve insulin resistance
• Protect against brain damage
• Slow cancer progression
• Strengthen bones

Studies have also linked mushroom consumption with reduced risks of prostate and breast cancer. In some countries like Japan and China, mushroom extracts are even used alongside cancer treatments due to their immune-boosting effects.

Women should make sure their diets include enough omega fatty acids, researchers say, after finding unusually low levels of these compounds in female Alzheimer’s patients.

This comes from an analysis of blood samples from both Alzheimer’s patients and healthy individuals, which showed that unsaturated fats, including those rich in omega fatty acids, were up to 20% lower in women living with the disease. So, could an omega-rich diet actually help reduce Alzheimer’s risk?

Can Omega-3 Rich Diet Protect Women From Alzheimer’s?

A major study has shown that women with Alzheimer’s have markedly lower levels of unsaturated lipids, including omega fatty acids, in their blood compared to cognitively healthy women. This points to a potential protective role for these fats in maintaining brain health.

Alzheimer’s tends to affect women more, particularly after 80, though the biological reasons are still not fully understood. To explore differences between men and women, researchers analyzed plasma samples from 841 participants in the AddNeuroMed cohort: 306 with Alzheimer’s, 165 with mild cognitive impairment, and 370 cognitively healthy controls. Using lipidomics, they studied 268 individual lipids per participant and examined how lipid composition varied by sex, while also exploring possible causal links through mediation analysis.

The findings revealed clear sex differences. Three lipid groups were linked to Alzheimer’s in women, but only one in men (p<0.05). In women with Alzheimer’s, lipids rich in highly unsaturated fatty acids, including omega fatty acids, were consistently lower, while saturated fats were higher (q<0.05). Importantly, the impact of unsaturated phospholipids on Alzheimer’s risk was independent of cholesterol, LDL, or apolipoprotein B, suggesting a direct biological effect. Men with Alzheimer’s did not show these lipid changes compared to healthy men.

These results highlight that lipid biology in Alzheimer’s is sex-specific, with women showing a clear loss of protective omega-rich fats. While this does not prove a cause-and-effect relationship, it suggests that omega-rich foods like oily fish or supplements could help reduce risk, though clinical trials are needed to confirm this.

How Does Omega Rich Diet Help With Alzheimer's?

A diet high in omega-3 fatty acids may support brain health and lower Alzheimer’s risk through anti-inflammatory, antioxidant, and neuroprotective effects. The most important omega-3s are docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), which are essential for proper brain structure and function, according to Healthline.

Women And Alzheimers

About two-thirds of people with Alzheimer’s in the US are women, notes Harvard neuropsychologist Rachel Buckley, PhD. “Women actually tend to live with dementia longer than men.”

Women are more likely to develop Alzheimer’s due to a mix of biological, social, and cultural factors, including longer life expectancy, hormonal changes after menopause, and differences in education and work experience. The disease can also show up differently in women; some studies suggest tau protein spreads faster in their brains, which may delay diagnosis until later stages, according to Harvard Health.

Recent research has highlighted that the reasons for the sex gap in Alzheimer’s are complex, involving both biology and social factors. Potential contributors include women’s exposure to sex hormones, genes on the X chromosome, the presence of risk factors like hearing loss, the APOE4 genetic variant, and lower cognitive reserve related to education levels.

Magnesium supplements are everywhere. Whether you see it on pharmacy shelves or wellness blogs and social media where influencers who swear by them. You’ve probably heard someone claim that a daily magnesium tablet can help you sleep better, ease muscle cramps, or boost your mood. But do you actually need one, or is this just another wellness trend gone too far?

What Is Magnesium and Why Do We Need It?

Magnesium is an essential mineral that plays a crucial role in over 300 biochemical reactions in the body. It helps regulate muscle and nerve function, supports a healthy immune system, builds protein, maintains blood sugar and blood pressure levels, and aids in energy production.

Because the body doesn’t produce magnesium on its own, it must come from external sources such as food or supplements. The recommended daily intake varies: 310–420 mg for adults and 30–410 mg for children, depending on age and sex.

The good news? A balanced diet can easily meet these requirements. Magnesium-rich foods include nuts and seeds, leafy green vegetables, legumes, seafood, whole grains, and meat. Even dark chocolate can help, 100 grams of dark chocolate contains around 146 mg of magnesium.

Who Is at Risk of Magnesium Deficiency?

Most people get enough magnesium from food, but certain groups are more vulnerable to deficiency. These include people with gastrointestinal disorders such as Crohn’s disease or coeliac disease, those with type 2 diabetes, people who consume excessive alcohol, and older adults.

If you’re low on magnesium, you might notice symptoms such as muscle twitches, spasms, fatigue, low appetite, nausea, or an irregular heartbeat. However, the only way to confirm a deficiency is through a blood test prescribed by your doctor, which, in most cases, is covered by Medicare.

Can Magnesium Supplements Really Help?

Magnesium supplements are often promoted as a solution for muscle cramps, migraines, and insomnia. But do they actually work?

While magnesium deficiency can lead to cramps, most cases of muscle cramps are not due to low magnesium. Research shows limited evidence that supplements prevent cramps, especially in older adults.

The link between magnesium and better sleep is also unclear. Some studies found it helped people fall asleep faster, while others found no significant difference.

When it comes to migraines, evidence is stronger. Studies suggest that taking 122–600 mg of magnesium daily for 4–24 weeks may reduce the frequency and severity of migraines in some people.

Are Magnesium Supplements Safe?

In general, magnesium supplements are safe when taken in the recommended amounts. However, too much can lead to nausea, abdominal cramps, and diarrhea, because magnesium draws water into the intestines.

Taking extremely large doses (around 5,000 mg daily) can cause magnesium toxicity, which is dangerous. Always check with your doctor before starting supplements, especially if you take other medications.

Different Forms and What to Watch Out For

Magnesium is available in tablets, powders, and even topical forms like creams and bath salts. While these skin-based products may raise magnesium levels slightly, they’re less effective than oral supplements or food sources.

When buying supplements, check the label carefully. Most tablets contain 150–350 mg of magnesium, but formulations vary widely. Some also include additional nutrients like vitamins B6, C, or D, and minerals like calcium or manganese.

Be cautious with vitamin B6, high intake can cause nerve damage over time. If you already take a multivitamin containing B6, avoid magnesium supplements that also include it.

Milk is one of the most common items found in every household and is considered a wholesome food packed with calcium, protein, and vitamin D.

It plays an important role in maintaining strong bones, building muscles, and supporting overall health. Because of its nutritional richness, milk is often called a complete food. However, it is essential to ensure that the milk you consume is pure and free from adulteration. Contaminated or diluted milk can lose its nutritional value and even harm your health. Fortunately, there are simple methods you can try at home to find out whether your milk is pure or adulterated.

What Is Milk Adulteration?

Food adulteration is the intentional act of reducing the quality of food by mixing or replacing it with inferior substances, or by removing essential components. The same applies to milk. While contamination of food can happen accidentally during storage, transport, or distribution, adulteration is done deliberately for profit.

Milk adulteration involves adding materials such as water, urea, detergent, or other chemicals to increase volume or extend shelf life. This practice reduces the nutritional value and can pose serious health risks to consumers.

How To Check Milk Adulteration at Home

There are a few simple ways to check for adulteration using common items at home:

• Water Test: Pour a small amount of milk onto a slanted surface. Pure milk flows slowly, leaving a white trail, while milk mixed with water flows quickly and leaves little or no mark.
• Detergent Test: Shake equal parts of milk and water. Pure milk forms a light foam, whereas adulterated milk creates thick, soapy froth.
• Starch Test: Add a few drops of iodine solution to the milk. If it turns blue, starch has been added.
• Urea Test: Mix a small amount of milk with soybean powder and dip red litmus paper into it. If the paper turns blue, it indicates the presence of urea.

What Happens When You Consume Adulterated Milk

Regularly drinking adulterated milk can cause several health issues from short-term stomach discomfort to severe, long-term illnesses. The exact effects depend on what substance has been added, ranging from diluted water to harmful chemicals.

Immediate Health Effects

• Digestive problems: Contaminants like urea, detergent, or unclean water can cause nausea, vomiting, diarrhea, and stomach cramps.
• Irritation and burning: Strong alkaline substances such as caustic soda may burn the mouth, throat, and digestive tract, damaging body tissues.
• Allergic reactions: Some chemical additives and impurities can trigger allergies, leading to rashes, itching, or breathing difficulty.

Long-Term Health Consequences

• Kidney damage: Chemicals like urea overwork the kidneys, increasing the risk of long-term damage or kidney failure.
• Liver problems: Preservatives such as formalin (formaldehyde) used to prolong milk’s freshness can harm the liver over time.
• Cancer risk: Long exposure to toxic compounds, including formalin and certain pesticides, has been linked to cancer.
• Heart disease: Artificial fats or vegetable oils added to milk can raise bad cholesterol, contributing to heart problems.
• Hormonal imbalance: Cattle injected with hormones like oxytocin can pass traces into milk, disrupting natural hormone levels in humans.
• Weakened immunity: Consuming impure milk regularly can weaken the immune system, making you more prone to infections.
• Nutritional deficiency: When milk is diluted or its nutrients are replaced with cheaper additives, it loses its health benefits. This is especially harmful for children, as it can affect their growth and development.