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RDA is often not enough – 75 percent in US correctly believe – April 2019

In the World of Supplements, Should We Really Follow Elite Athletes? Scientific American Blog

“Surprisingly, 75 percent of people in the United States believe that it is beneficial to take higher doses of supplements than is recommended because it will lead to increased health benefits”

RDA dose size is only enough to PREVENT a major illness

Rickets Weak Bones	Vitamin D
Scurvy	Vitamin C
Beriberi	Vitamin B1
Blindness	Vitamin A
Goiter	Iodine
Anemia	Iron
Anemia	Vitamin B12

RDA dose size is frequently not enough to improve health nor prevent other diseases

Note: In 2020 RDA ==> Daily Value: based on 2,000 Calorie intake, which will finally allow the recommendation to increase with weight

Note: 1,200 IU of Vitamin D now recommended if you consume 3,000 calories daily (FDA) – 2018

See also VitaminDWiki

10 reasons why the RDA is not enough for children
10 reasons why the RDA is not enough for seniors
Govt admits RDA for Vitamin D is too low, but refuses to increase it
- The govts data of 2009 shows that 5X higher is needed (3,000 IU)
4,000 IU of Vitamin D is OK - 19 organizations agree - 2018
Supplements taken by US Adults, Grassroots Health – March 2019
Vitamin D Cofactors in a nutshell
- US still (2018) does not distinguish between Vitamin K1 and Vitamin K2
- US still (2018) does not have a Daily Value for Omega-3
- US still (2018) does not have a Daily Value for Resveratrol

Supplements category in VitaminDWiki has the following

Supplement	# of studies		Increase D to tissue	How Often
Vitamin D	986+	Most people do not have enough anymore	N.A.	daily to 2 weeks
Magnesium	369	Many people need Mg Vit D consumes Mg Muscle pain, Afib	30%	Several times a day
Vitamin K	157	Hard bones, soft arteries	115%	2 day
Omega-3	409	Synergistic with Vit D Independent of Vit D	30? %	2 day
Calcium	227	Reduce or add Vit K		2 day
Zinc	90	immunity	20 ?% if poor VDR	7 day
Boron	37	plants and animals need B	+20%	7 day
Resveratrol	48	antioxidant	>100% if poor VDR	Daily
Glutathione	10+	master antioxidant	Improves activation of 5 Vit D genes	Daily?

Also Vitamin C 55	Iodine 32	Iron 68	Vitamin B12 59	Selenium 25	Folate 31

RDA is often not enough – 75 percent in US correctly believe – April 2019

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