Functional Yogurt Powder Effect on Bone Health Biomarkers

Inclusion Criteria: * With healthy weight, overweight or obesity type I (IMC ≥18.5 \<35 Kg/m2); * With diagnosis of osteopenia without pharmacological treatment or that meet at least two of the following criteria: * Dairy intake under 2 servings daily in the last year * Sedentary lifestyle (measured with the International physical activity questionary IPAQ) * Smokers of more than 5 cigarettes daily * Signed informed consent. Exclusion Criteria: * Severe diseases (hepatic, kidney, cancer…) * Renal failure (defined as serum creatinine level \>200 mol/L) * Phosphate binding antacids (\> 6 months a year) * Oral glucocorticoids (\>5 mg/day of prednison equivalent in the last 8 months or a total dose of 2g of prednison equivalent in the last 12 months) * Local treatment with injectable glucocorticoids (\>5 injections/year) * Treatment with inhaled glucocorticoids (\>6months in the last year and more than 2 mg/day of prednison equivalent) * Previous or concomitant treatment for metabolic bone disease * Use of hormone replacement therapy (oral estrogen, estradiol vaginal ring, antiestrogen, progesterone) * Anabolic steroid use in the last 3 months or more than one in the last 6 months * Estradiol implants in the last 3 years * Isoflavan use in the last 6 months or more than once a month for the last 12 months * Calcitonin use in the last month or more than 1 month in the last 6 months * Concomitant use of nutritional supplements with silicon, horsetail extracts, bamboo, colloidal silicic acid or silanol derivatives in the last 6 months * Hyperparathyroidism and/or hyperthyroidism * Chronic intestinal disease (Gastritis, ulcerative colitis, irritable bowel disease, pseudomembranous colitis, inflammatory bowel disease, Crohn disease, etc) * Dementia, mental disease or diminished cognitive function * Mayor surgery in the last month or gastrointestinal surgery in the last 3 months * Prebiotic, probiotic ad/or symbiotic consumption, antioxidant supplements, supplements with omega 3, vitamins or minerals in the last 2 weeks prior to the start of the study * Participation in programs and / or drug use for weight control in the last 6 months * Alcohol consumption over 30g/day * Habitual laxative use and non acceptance in giving up its use during the study * Individuals using topic glucocorticoids can enter the trial