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

Some patients report changes in skin texture within 23 weeks, while more structural changes, such as those related to collagen remodeling or hair growth, typically take longer often 36 months of consistent protocol, and results vary by individual Standard regenerative protocols generally range from 100200mcg per session, given 23 times weekly, while higher-dose protocols (up to 2mg) are reserved for specific recovery needs under closer medical supervision
Chatgilialoglu, C
Clinical research on HA focuses primarily on its benefits: A 2015 study in Clinical, Cosmetic and Investigational Dermatology found significant skin elasticity improvements with oral HA, without changes in weight