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WashPost: An emerging (đang nổi lên, xuất hiện nhiều) view among scientists (nhà khoa học) is that one major overlooked (dễ bị bỏ qua) component (thành phần) in obesity (béo phì) is almost certainly our environment — in particular, the pervasive (lan tràn khắp, thâm nhập khắp) presence (xuất hiện, có mặt) within it of chemicals which, even at very low doses, act to disturb (làm xáo trộn, làm nhiễu loạn) the normal functioning (chức năng thông thường) of human metabolism (trao đổi chất), upsetting (đảo lộn) the body’s ability to regulate its intake (ăn vào) and expenditure of energy (tiêu hao năng lượng).

Some of these chemicals, known as “obesogens,” directly boost the production of specific cell types and fatty tissues (mô mỡ) associated with obesity (béo phì). Unfortunately, these chemicals are used in many of the most basic products of modern life including plastic packaging (bao bì), clothes (quần áo) and furniture (đồ đạc gia đình), cosmetics (mỹ phẩm), food additives (phụ gia thực phẩm), herbicides (thuốc diệt cỏ) and pesticides (thuốc trừ sâu).

Ten years ago the idea of chemically induced obesity was something of a fringe (ven rìa, mép bên lề) hypothesis (giả thuyết), but not anymore.

“Obesogens are certainly a contributing factor to the obesity epidemic (dịch bệnh),” is what Bruce Blumberg, an expert on obesity and endocrine-disrupting chemicals from the University of California, Irvine, told me by email. “The difficulty is determining what fraction of obesity is related to chemical exposure.”

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