The Influence of the Nutritional Status of Women Between 30 and 45 Years of Age on the Condition of the Skin and Body Composition

Inclusion Criteria: * women * aged 30-45 years * vegan or vegetarian or omnivorous diet for at least 3 years, * body mass index (BMI) between 18.5 and 25. Exclusion Criteria: * smoking or have smoked in the past (quit less than 3 years ago), * pregnancy or breastfeeding, * pre-menopause * medications that increase skin dryness (e.g. retinoids), * visiting solariums, * visiting of the fitness center more than 3 times a week, * regular consumption of protein supplements (including food supplements with collagen), * chronic and acute skin diseases, * chronic and acute diseases of the gastrointestinal tract (e.g. celiac disease), * lactose intolerance, * various diets (e.g. health, slimming), * damaged skin in the test area (inner forearm), * hyperhidrosis or increased sweating, * diseases that cause a chronically damaged skin barrier (e.g. atopic dermatitis, ichthyosis), * cancer diseases, * pacemaker.