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Data availability Due to ethical restrictions regarding data protection issues and the study specific consent text and procedure, the data cannot be made publicly available, but data are available to all interested researchers upon request

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More Health News Medically Reviewed on 6/23/2026 Mayo Clinic: "Vitamin B-12." National Institutes of Health: "Vitamin B12." Oregon State University: "Vitamin B12." Top What Happens if You Take Too Much Vitamin B12 Related Articles 22 Healthy Foods High in B VitaminsAny deficiency of B vitamins can lead to various health conditions

Incredibly professional, friendly and kind place I am usually terrified by needles and my veins are impossible to find but Jeff the head nurse was my angel i didn't feel anything and he was so kind and attentive making the whole experience so pleasant

Conditions like blocked fallopian tubes, irregular uterine shape, endometriosis, or fibroids, can be the reason for hindering conception

For those on a vegetarian or vegan diet, fortified foods and supplements are needed