Longevity Doctor Shares Daily Habits She Avoids for Long-Term Health

Dr. Poonam Desai, a doctor specializing in longevity, has detailed a series of everyday habits she avoids to maintain her long-term health. Her personal regimen includes avoiding instant coffee, canned beans, pre-packaged salads, and products labeled 'unscented,' alongside specific choices about bedding and clothing.

Desai prefers freshly brewed coffee, citing concerns about acrylamide, a chemical that can form at high temperatures during roasting. While acrylamide is classified as a probable human carcinogen based on animal studies, evidence linking dietary exposure to cancer in humans remains inconclusive, and freshly brewed coffee can also contain the chemical. She also avoids coffee pods, expressing concern about microplastic exposure from the plastic components when hot water is involved. Research into the health effects of microplastics is ongoing, with no definitive evidence yet linking pod coffee consumption to harm.

For products, Desai chooses those labeled "fragrance-free" over "unscented." She explains that some unscented products may contain masking fragrances, whereas fragrance-free items are formulated without added scents. This distinction is particularly relevant for individuals with sensitive skin, though checking ingredient lists is always recommended.

In her personal routine, Desai avoids wearing synthetic gym clothes in saunas, believing the combination of heat and open pores is detrimental due to the plastic content. Many activewear items are made from polyester, nylon, or elastane, but clinical evidence is insufficient to support the claim that plastic particles from clothing can enter the body under these conditions. Similarly, she opts for cotton bedsheets over polyester, citing concerns that synthetic textiles can shed microplastics during use and washing, though the health risks associated with sleeping on such materials have not been established.

Desai also cautions against leaving certain reusable drink bottles in direct sunlight and heat, specifically mentioning Owala bottles due to their plastic spouts. While heat and sunlight can degrade some plastics and potentially increase chemical leaching, the risk depends on the specific materials and conditions. She also avoids canned beans, preferring dried varieties due to concerns about Bisphenol A (BPA) or similar compounds lining the cans. Although BPA has historically been used in can linings, many manufacturers have transitioned to alternatives, and not all canned foods contain BPA-based linings.

Regarding produce, Desai avoids bagged lettuce and pre-packaged salad mixes, opting for whole heads of lettuce instead. She notes that pre-cut greens can be a source of foodborne illness outbreaks due to contamination risks during processing. While commercially packaged salads are subject to food safety regulations and undergo washing processes like chlorination, whole lettuce can also harbor bacteria.

Perhaps her most unconventional rule pertains to sunglasses. Desai avoids wearing them before 10 a.m. or after 3 p.m., believing that natural daylight exposure is crucial for setting the body's circadian rhythm. While morning daylight is recognized for its role in regulating the internal clock, her specific timing for sunglasses is a personal preference rather than a widespread medical guideline. Health authorities, such as Cancer Council Australia, emphasize the importance of sunglasses as part of comprehensive sun protection, alongside protective clothing, hats, and sunscreen, especially when the UV index is high.

Dr. Desai's advice aligns with a growing interest in longevity science, which focuses on extending healthspan. In Australia, researchers are exploring nutrition, physical activity, and cognitive health in aging populations. However, many established health recommendations, such as regular exercise, a balanced diet, adequate sleep, avoiding smoking, and limiting alcohol, remain the cornerstones of promoting long-term health.