title: Response of plasma-25-hydroxyvitamin D to ultraviolet irradiation in long-stay geriatric patients.
abstract: The response of plasma-25-hydroxyvitamin D (25[OH]D) to different exposures to ultraviolet irradiation has been studied in patients in long-stay geriatric wards. Increases sufficient to bring the plasma-25(OH)D into the normal range may be obtained with doses less than those required to produce erythema. The provision of such background irradiation may be a suitable method of preventing vitamin-D deficiency in elderly subjects who receive very little exposure to sunlight.
mesh_terms: D000367:Age Factors; D000368:Aged; D004739:England; D005853:Geriatrics; D006757:Hospital Units; D006801:Humans; D006887:Hydroxycholecalciferols / Q000097:blood / Q000528:radiation effects*; D007902:Length of Stay; D008134:Long-Term Care; D010018:Osteomalacia / Q000517:prevention & control*; D011879:Radiotherapy Dosage; D014467:Ultraviolet Therapy; D014808:Vitamin D Deficiency / Q000517:prevention & control*
chemical_list: D006887:Hydroxycholecalciferols