Public interest in environmental toxins is at a peak. Some concerns are backed by strong science; others are social-media noise. Here is a physician-level breakdown of what matters.
PFAS — Thyroid & Bone Density
Perfluoroalkyl substances (PFAS) alter thyroid hormone transport and have been linked to lower bone mineral density in adolescents. Reduce exposure by filtering drinking water (activated carbon or reverse osmosis) and avoiding non-stick and stain-proof coatings when possible.
Microplastics & Fertility
Microplastics and phthalates have been detected in testicular and ovarian tissue. Emerging data suggest impacts on sperm motility and testosterone. Simple wins: avoid heating food in plastic, reduce plastic water bottle use, and choose fragrance-free personal care where practical.
‘Cortisol Face’ vs Real Cushing’s
Puffy cheeks on TikTok are usually inflammation, sodium, alcohol, or sleep debt — not Cushing’s syndrome. True Cushing’s features rapid central weight gain, purple abdominal striae, easy bruising, proximal muscle weakness, and uncontrolled hypertension. Diagnosis is biochemical (24-hour urine cortisol, late-night salivary cortisol, dexamethasone suppression).
Frequently Asked Questions
Do ‘cortisol detox’ products work?
This content is educational and does not replace individualized medical advice. Please consult an endocrinologist for personal guidance.
Sources and content history
Author / credited medical reviewer: Irina C. Delgado Varela, MD
Editorially updated: . Original publication date has not been recorded. Clinical review date has not been recorded.