Kathmandu. The Nepal Medical Association (NMA) has expressed serious concern over a recent alarming study report published by the Center for Public Health and Environmental Promotion (CEPHED). The association voiced its worry after an excessive amount of 'lead,' an extremely harmful substance to human health, was found in commonly used oral and dental hygiene products, including toothpastes, and various cosmetic items.Testing of samples collected from various cities across the country revealed that 31 percent of the products contained lead levels exceeding international standards. More surprisingly, lead was detected in 45 percent of the samples of daily-use toothpaste, including products used...