This can produce a type of temporary fever, opening pores as well as oxygenating your bloodstream. Are different ways of subjecting yourself to steam therapy. We have covered steam inhalation in this post, but the other ways it can be administered include hot showers, steam rooms, boiling water and placing your face over it with a towel draped behind your head. Most commonly the water used for steam therapy is boiled until it surpasses 100°F and 38°C. Individuals who are seeking steam therapy will generally subject themselves to the heat for between 20 minutes and 60 minutes.
Sacks et al. (2005) reported the case of a 72-year-old man, described as professionally successful, intelligent, and cultivated, with polymyalgia rheumatica, who after being treated with prednisone developed a psychosis and dementia , which several behavioral neurology and neuropsychiatry consultants initially diagnosed as early dementia or Alzheimer's disease .  Large dosage variations in the patient's medication (including a self-increased dosage from 10 mg/day to as much as 100 mg/day for at least 3 months) produced extreme behavioral changes, from missed appointments to physical altercations, and eventually admission to a psychiatric ward and later to a locked Alzheimer facility. During this time, neuropsychological testing showed a decline in the patient's previously superior IQ as well as deficits in memory, language, fluency, and visuospatial function, which given the patient's age was considered to be compatible with early dementia. When the steroid treatment ended after a year, the patent's confusion and disorganized appearance stopped immediately. Within several weeks, testing showed strong improvement in almost all cognitive functions. His doctors were surprised at the improvement, since the results were inconsistent with a diagnosis of dementia or Alzheimer's. Testing after 14 months showed a large jump in Full Scale IQ from 87 to 124, but mild dysfunction in executive function, memory, attentional control, and verbal/nonverbal memory remained. 
Vitamin A deficiency causes mucus to build up in the lungs, bronchial tubes, and throat. One of the earliest observable symptoms of vitamin A deficiency is having to clear your throat regularly or frequently (not caused by an itch in your lower throat - zinc deficiency). More significant vitamin A deficiency symptoms includes red bumps that are not acne on or near temples, and brown color in urine (selenium removes this last symptom). The body converts beta carotene to vitamin A. The body will only make as much vitamin A from beta carotene as it needs, which prevents taking too much vitamin A. Like too much vitamin A, too much beta carotene will weaken the immune system increasing susceptibility to a respiratory infection, including the Flu, leading to pneumonia. Consider a 10,000 IU supplement of beta carotene every day or every other day. Beta carotene supplements also come in 25,000 IU doses and are common but are too potent, but you can save some money if you take 25,000 IU every other day or every third day.