Triclosan, Personal Care Products, and Thyroid-Linked Cholesterol

The hidden link to your health

The soap and personal care products in your bathroom are likely doing more than just cleaning your skin. A 2026 study published in Environmental Science & Technology found a direct link between exposure to common chemicals in personal care products and an increased risk of hyperlipidemia (high cholesterol).

Researchers identified triclosan and 4-hydroxybenzophenone as major culprits. Participants with higher exposure to these substances showed a significantly elevated risk of high cholesterol. The study, which you can read in full on PubMed, highlights that these chemicals interfere with thyroid hormone function, which acts as a mediator for these metabolic issues.

Why your thyroid matters

The study found that thyroid hormones were responsible for over 12% of the association between triclosan exposure and cholesterol levels. By inhibiting lipolysis and promoting oxidative stress, these chemicals are essentially disrupting your body's ability to regulate fats properly. This isn't just about what you eat; it's about what you put on your body every single day.

Take control of your bathroom cabinet

You don't need to live in fear, but you do need to be selective. Start by checking the labels on your hand soaps, lotions, and body washes for triclosan and other endocrine-disrupting chemicals. When you run out of your current supply, swap them for cleaner, tested options. We’ve curated a selection of non-toxic home alternatives that are free from these hidden risks. It is time to stop letting your personal care routine dictate your internal health.

Source: Zheng Y, Zhang L, Xiang Q, Li J, Zhu H (2026). Environ Sci Technol.