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[Brick-tea type adult bone fluorosis]
Jin Cao1, Yan Zhao, Jianwei Liu
1Xiangya School of Medicine, Centro-South University, Changsha 410078, China.
Wei Sheng Yan Jiu = Journal of Hygiene Research
|June 10, 2003
Summary
High fluorine intake from brick-tea foods in Tibet causes severe bone fluorosis in adults. This study found 89% of participants had fluorosis osteopathy, with 74% showing osteosclerosis.
Area of Science:
- Environmental Health
- Toxicology
- Epidemiology
Context:
- Brick-tea consumption is a dietary staple in Naqu County, Tibet.
- Fluorosis is a significant public health concern in high-altitude regions.
- Traditional diets can lead to unique exposure pathways for environmental toxins.
Purpose:
- To assess the health impacts of brick-tea type fluorosis in adults.
- To determine daily fluorine intake and environmental fluorine levels.
- To investigate clinical and radiological manifestations of fluorosis.
Summary:
- A study in Naqu County, Tibet, examined 111 adults (30-78 years) for brick-tea type fluorosis.
- High fluorine content was found in brick-tea, zamba, and buttered tea, leading to a daily intake of 11.99 mg, primarily from these foods.
- Fluorosis osteopathy was detected in 89% of participants, with 83% confirmed by X-ray, showing characteristics like degenerative arthropathy and osteosclerosis.
Impact:
- Brick-tea consumption is a major source of severe fluorosis in Tibet, exceeding impacts seen in water or coal-related fluorosis.
- The findings highlight the need for dietary interventions and public health strategies in high-risk populations.
- High prevalence of osteosclerosis (74%) indicates significant bone matrix changes due to chronic fluorine exposure.