If must be a tolerable weight if you're walking a lot, or doing a lot of physical activities.
There was also no credible evidence found of a tolerable weight estimation error, in terms of safety for drug dose calculation, for an individual child.
But compared to permissible daily intake by WHO/FAO [36] from provisional tolerable daily intake of 0.8 mg/kg body weight, for 60 kg and allocating 10% to dietary sample[35], then 24% of samples are above permissible levels.
These levels were also way below the permissible daily intake calculated from provisional tolerable weekly intake (PTWI) of 25 μg/kg body weight for Pb [38], and of 4 μg/kg body weight for Hg [43], adjusted per day for a 60 kg body weight and allocating 10% for supplementary dietary tablets [35].
The FAO/WHO in 1993 established a provisional tolerable weekly intake (PTWI) of 25 μg lead/kg body weight for humans, equaling 1500 μg lead/week for a 60 kg person [22].
An estimate of the health risk to consumers is calculated, based on the tolerable weekly intake (TWI) specified by the European Food Safety Authority of 1 mg/kg body weight for all groups of people.
The provisional tolerable weekly intake (PTWI) of lead has been set at 25 μg/kg body weight for children [ World Health Organization (WHO) 1993], equivalent to 3.6μg/kgg body weight/day.
Despite these limitations, it is noteworthy that the estimated levels of fumonisin ingestion for some women (650 9,441 ng/kg body weight for women in the highest quartile) surpass the World Health Organization's maximum tolerable daily intake of 2 μg/kg (2,000 ng/kg) of body weight of any combination of fumonisins (WHO 2002).
The provisional tolerable weekly intake for cadmium for US and Europe declared by the relevant authorities are 2.52 μg per Kg body weight [ 11, 12] and corresponding value declared by WHO is 5.8 μg per Kg [ 13].
All of these values are higher than the set PDE level of 1000 μg/day [19], and RDA levels of 900 μg/day [6], and WHO permitted daily intake of 300 μg/day [38] calculated from provisional tolerable daily intake for a body weight of 60 kg and allocating 10% due to dietary supplements.
