Better than sliced bread: Curing rickets with baked goods June 2019

• "The story goes back to the 1920s, and it takes place in a bakery in a country (Canada) where hundreds of thousands of children were suffering painful and debilitating effects of rickets."
• "McGroarty’s patent formula used a compound called ergosterol, which is a steroid alcohol found in fungi that converts to Vitamin D when irradiated with UV light."
• "He added it to yeast, irradiated it with quartz lamps, and used that yeast to make Vitamin D-enriched bread."

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See also VitaminDWiki

Note Vitamin D fortified Milk was started a few years later - not at Govt demand

• Fortification with Vitamin D category listing has 104 items along with related searches
• 5000 IU of vitamin D in daily bread substantially improved quality of life in nursing home – May 2014
• Vitamin D fortified food (bread) is similar to supplementation – RCT April 2016
• 5,000 IU of vitamin D (in bread) was great – should have continued forever – Oct 2013
• 5000 IU vitamin D3 added daily to bread raised blood levels to 50 ng – 2009