The relationship between vitamin D and adolescents' parathyroid hormone and bone mineral density.

Introduction: To detect the relationship between 25-hydroxy vitamin D (25(OH)D) and adolescents' parathyroid hormone (PTH) and bone mineral density (BMD).

Material And Methods: Two hundred adolescent girls were recruited for this cross-sectional comparative study. After detailed evaluation, a pelvic sonography was performed for the studied adolescents to rule out any pelvic pathology.

Relationship between vitamin D and adolescents' hypothyroidism - a cross-sectional study.

Introduction: To detect the relationship between 25(OH)D and hypothyroidism in adolescents.

Material And Methods: A total of 180 adolescents were included in the current study, which was conducted in West Kazakhstan (Aktobe) over 2 years. After thorough evaluation, blood samples were collected from the studied participants to measure the thyroid stimulating hormone (TSH), free thyroxine (T4), prolactin, glycosylated haemoglobin, and 25(OH)D.

Relation between vitamin D and adolescents' serum prolactin.

Introduction: To detect whether there is a relation between vitamin D (Vit. D) and adolescents' serum prolactin (PRL) or not.

Material And Methods: Hundred and seventy-six adolescent girls were recruited for the current study, which was conducted in West Kazakhstan (Aktobe) over two years.

The cortisol levels in the follicular and luteal phases of the healthy menstruating women: a meta-analysis.

Objective: The conflicting results of the previous studies regarding the serum cortisol through the menstrual cycle warranted further research. We aimed to detect the cortisol levels in the follicular and luteal phases of healthy menstruating women.

Materials And Methods: A literature search was conducted by two independent authors according to PRISMA criteria over PubMed, Web of Science and Psych-Info to retrieve the articles published in English from 1990 until 2020 and containing the keywords, Cortisol, Menstrual, Follicular, or Luteal.