Which Fabrics Pose the Greatest Health Risks

Many people carefully check food labels, but rarely examine the clothing that sits against their skin all day. The article says modern textiles can contain thousands of chemicals, and some of them may be absorbed through the skin and affect metabolic, hormonal, and even genetic health.

Common substances cited include bisphenols such as BPA and BPS, phthalates used to soften plastics in children’s clothing, water- and stain-resistant chemicals, and azo dyes, which make up nearly half of the world’s textile dyes. The piece also warns about so-called unintended substances, toxic byproducts created during manufacturing or recycling.

A surprising concern is recycled polyester. Although recycling is seen as environmentally positive, the article says recycled polyester can contain almost twice the BPA concentration of conventional polyester, because pollutants can accumulate during the plastic-to-textile process. Sportswear is flagged as especially problematic, since sweat and heat can increase skin absorption. The text says BPA uptake rises sharply when fabric is wet, potentially exceeding the daily tolerable intake limit, while nanotech coatings and the heavy metal antimony in polyester may also enter the bloodstream.

To reduce exposure, the article recommends avoiding synthetic fabrics such as polyester, nylon, and acrylic when possible, being cautious with “smart” fabrics advertised as stain-resistant, flame-retardant, wrinkle-free, or antibacterial, and watching for dark or highly colored garments. Safer options include organic cotton, natural fibers like linen, hemp, and wool, and certified textiles carrying OEKO-TEX Standard 100 or GOTS labels. It also advises washing new clothes before wearing them, taking off sweaty sportswear quickly, and choosing lighter colors. The article is by Ron Yafe, who is scheduled to speak on June 16 and 17 at the Inspiration 2026 conference of Reidman College in Kfar Maccabiah, Ramat Gan.