A report from the Framingham Offspring Study of 2,999 adults found the following average daily B12 intakes, including fortified foods and supplements (Tucker, 2000): Age 26-49: 8.9 g Age 50-64: 8.7 g Age 65-83: 8.5 g A 2015-2016 National Health and Nutrition Examination Survey of over 4,500 adults 60 years and older found the following average daily B12 intakes (USDA NHANES, 2019): Male non-supplement users (68% of men): 4.5 g Male supplement users: 5.3 g from food plus 326 g from supplements Female non-supplement users (63% of women): 3.6 g Female supplement users: 3.8 g from food plus 520 g from supplements European Food Safety Authoritys Recommendations In 2015, the EFSA released recommendations for B12 intake across Europe
Still, there arent a lot of large, high-quality studies on the benefits of these products and researchers say we probably need more safety data
See how B12 injections can boost your energy levels, motivating you to be more active, which can help you lose weight
One study found a significant reduction in hair loss over the span of four injection treatments, increasing the hair count from an average of 71 hair follicular units to 93
