{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T00:37:25Z","timestamp":1778891845994,"version":"3.51.4"},"reference-count":71,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2024,12,4]],"date-time":"2024-12-04T00:00:00Z","timestamp":1733270400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Background: The condition of vitamin D (25OHD) deficiency represents an important public health problem. In Europe, hypovitaminosis is common not only in the elderly population but also between 50 and 70 years, both in males and females. Data regarding vitamin D intake in the Italian population are very limited. In a recent paper, reporting data collected by a specific Frequency Food Questionnaire (FFQ), we observed in a small group of healthy subjects that the dietary consumption of vitamin D, both in females and males, was far below the average. Methods: With the aim of expanding our preliminary data, we conducted a survey on a large cohort of subjects from different areas of Northern, Central, and Southern Italy. The FFQ contained 11 different questions regarding the amount and type of intake of foods containing ergocalciferol and cholecalciferol. It was submitted to 870 subjects, 627 females and 243 males, with an age range from 40 to 80 years; 31.6% of the studied population was apparently in good health, while 68.4% were affected by different pathologies. Results: The present data confirm previous observations: the global quantity of vitamin D intake in 14 days was 70.8 \u03bcg (\u00b11.8 SE, \u00b154.4 SD) in females and 87.5 \u03bcg (\u00b11.9 SE, \u00b157.1 SD) in males; the mean daily intake of vitamin D in females and males was 5.05 \u03bcg (\u00b10.5 SE, \u00b13.8 SD) and 6.25 \u03bcg (\u00b10.21 SE, \u00b14.1 SD), respectively. In healthy subjects, a gradual decrease was observed in the overall intake of vitamin D in both females and males according to an increase in age bracket, ranging from 74.5 \u03bcg and 103.8 \u03bcg in the 40\u201350 age group to 54.5 \u03bcg and 87.8 \u03bcg in the 71\u201380 age group, respectively. Conclusions: In conclusion, the present data, collected in a large Italian cohort, underscore that the daily intake of vitamin D is far below the recommended daily average, thereby contributing to the development of potential hypovitaminosis.<\/jats:p>","DOI":"10.3390\/nu16234194","type":"journal-article","created":{"date-parts":[[2024,12,4]],"date-time":"2024-12-04T04:47:22Z","timestamp":1733287642000},"page":"4194","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Analysis of Usual Consumption of Vitamin D Among Adult Individuals in Italy"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2380-7432","authenticated-orcid":false,"given":"Ranuccio","family":"Nuti","sequence":"first","affiliation":[{"name":"Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luigi","family":"Gennari","sequence":"additional","affiliation":[{"name":"Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guido","family":"Cavati","sequence":"additional","affiliation":[{"name":"Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carla","family":"Caffarelli","sequence":"additional","affiliation":[{"name":"Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bruno","family":"Frediani","sequence":"additional","affiliation":[{"name":"Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stefano","family":"Gonnelli","sequence":"additional","affiliation":[{"name":"Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonino","family":"Catalano","sequence":"additional","affiliation":[{"name":"Department of Clinical and Experimental Medicine, University of Messina, 98121 Messina, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cristiano Maria","family":"Francucci","sequence":"additional","affiliation":[{"name":"Istituto Nazionale di Ricovero e Cura per Anziani Istituti di Ricovero e Cura a Carattere Scientifico, 60124 Ancona, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Concetta","family":"Laurentaci","sequence":"additional","affiliation":[{"name":"Azienda Sanitaria Matera, 75100 Matera, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giulia","family":"Letizia Mauro","sequence":"additional","affiliation":[{"name":"Dipartimento delle Discipline Chirurgiche, Oncologiche e Stomatologiche, University of Palermo, 90121 Palermo, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nazzarena","family":"Malavolta","sequence":"additional","affiliation":[{"name":"Casa di Cura Madre Fortunata Toniolo, 40010 Bologna, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maurizio","family":"Mazzantini","sequence":"additional","affiliation":[{"name":"Azienda Ospedaliera Universitaria Pisana, 56121 Pisa, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giovanni","family":"Minisola","sequence":"additional","affiliation":[{"name":"Ospedale San Camillo, 00152 Rome, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Raffaella","family":"Russo","sequence":"additional","affiliation":[{"name":"Department of Medical and Surgical Science, University Magna Grecia, 88100 Catanzaro, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pasquale","family":"Sabatino","sequence":"additional","affiliation":[{"name":"ASL Salerno, 84121 Salerno, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0823-4907","authenticated-orcid":false,"given":"Monica","family":"Pinto","sequence":"additional","affiliation":[{"name":"Istituto Nazionale Tumori IRCCS Fondazione G. 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