In the treatment of primary hypothyroidism, guidelines issued by some organizations advise merely normalizing the TSH, reducing it to any value within the reference range. However, many studies show that this approach often produces little improvement in symptoms or in the risk of diseases associated with hypothyroidism. For this reason, some organizations and experts recommend titrating T4 dos...

Overt hypothyroidism is diagnosed by a serum thyroid-stimulating hormone (TSH) concentration above the normal reference range and a serum free thyroxine (FT4) concentration below the reference range (BTA 2006). Clinical features may be absent or present. Subclinical hypothyroidism is diagnosed by a TSH concentration above the reference range with an FT4 concentration within the reference range ...

Several recent studies have shown that the fecundity of a man decreases progressively with sperm concentrations below 40 million spermatozoa per mL. Therefore, it is unfortunate that the new World Health Organization guidelines for semen analysis recommend lowering the lower cutoff value for normal sperm concentration from 20 to 15 million spermatozoa per mL. As a result large groups of subfert...

OBJECTIVE Little is known to date about the relationship between poor motor abilities and overweight or obese pre-school children. Thus, this study examined the association between motor abilities and weight status in 1,228 kindergarten children (45.8% female). METHOD Anthropometric data were assessed; age 4.7 + or - 1.0 years; height 108.6 + or - 8.0 cm; weight 19.1 + or - 3.6 kg; BMI 16.1 +...