Tetrahydrobiopterin deficiency is indicated at least in tetrahydrobiopterin deficiency caused by GTPCH deficiency or PTPS deficiency. This condition is very rare; approximately 600 cases have been reported worldwide. In most parts of the world, only 1% to 2% of all infants with high phenylalanine levels have this disorder. In Taiwan, about 30% of newborns with elevated levels of phenylalanine have a deficiency of THB. Subclinical deficiency can be found in individuals with poor diet (including low intake of folate or vitamin C) or genetic mutations in the MTHFR genes, which are involved in BH4 synthesis and recycling. Tetrahydrobiopterin deficiency Tetrahydrobiopterin deficiency (THBD,
Vitamin D deficiency in Australia in comparison to the 25% to the controlled. In Australia, vitamin D deficiency has been recognised within particular subgroups such as age, dark skinned and veiled women. There is deficiencies in around 80%, particularly in dark skinned and or veiled populations. The prevalence of vitamin D deficiency amongst dark skinner or who cover their skin for religious reasons can be directly attributed to the extremely low of sun exposure to which is the main source of vitamin D in Australia. Veiled women or individuals with dark skin pigmentation are easily vulnerable to fall into levels considered deficient in Australia. This