But although the language and meaning of flowers have their roots in the ancient past, they've evolved somewhat over the years. The first rule of giving flowers to your spouse is to know and give them what they personally like. That's more important than anything else.
How much vitamin D should adults take? According to the National Institutes of Health (NIH), the daily Adequate Intake (AI) for adults is 5 mcg (200 IU) daily for males, female, and pregnant/lactating women under the age of 50. People 50 to 70 years old should get 10 mcg daily (400 IU) daily, and those over 70 should get 15 mcg daily (600 IU). Based on recent research, Dr. Weil recommends 2,000 IU of vitamin D per day. Look for supplements that provide D3 (cholecalciferol) rather than D2 (ergocalciferol).
The safe upper limit for vitamin D is 1,000 to 1,500 international units (IU) per day for infants. For children aged one to eight years, the safe upper limit is 2,500 to 3,000 IU/day, and 4,000 IU/day for children nine years and older, adults and pregnant and lactating teens and women.Excessive sun exposure will not cause vitamin D poisoning because the body limits the amount of this vitamin it produces.ome experts suggest that men and women over fifty take 800 IU of vitamin D year-round. Check with your VA doctor to see how much vitamin D you need. The usual recommended dietary allowance (RDA) for vitamin D is 400 IU.