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27 cze 2024 · For adults age 50 and older, the recommended dietary intake of vitamin C is 90 mg / day for men and 75 mg / day for women, with an upper limit of 2,000 mg / day. This recommended intake generally does not increase as we get older.
If you are over age 70, you need at least 20 mcg (800 IU), but not more than 100 mcg (4,000 IU). Women Age 51+ : If you are age 51–70, you need at least 15 mcg (600 IU) each day, but not more than 100 mcg (4,000 IU).
2 gru 2019 · Vitamin C supplements should meet the RDA and stay well below the established UL — 400 for young children, 1,200 mg for kids aged 9–13, 1,800 mg for teens, and 2,000 mg for adults.
Determining the right dosage of vitamin C for seniors depends on various factors, including age, sex, overall health, and dietary intake. The Recommended Dietary Allowance (RDA) for vitamin C set by the National Institutes of Health (NIH) is: Men aged 51 years and older: 90 mg per day. Women aged 51 years and older: 75 mg per day.
In the AREDS study, older individuals who received supplements of 500 mg vitamin C, 400 IU vitamin E, and 15 mg beta-carotene for an average of 6.3 years did not have a significantly lower risk of developing cataracts or of cataract progression than those who received a placebo .
5 maj 2023 · The recommended vitamin C dosage per day for healthy women is 75 mg per day and for men it's 90 mg per day. For adults, the tolerable upper intake level (UL) — the highest daily intake likely to pose no risks — is 2,000 mg per day.
Estimates of median dietary intakes of vitamin C for adults are 102 mg/day and 72 mg/day in the United States and Canada, respectively. The Tolerable Upper Intake Level (UL) for adults is set at 2 g/day; the adverse effects upon which the UL is based are osmotic diarrhea and gastrointestinal disturbances. Go to: BACKGROUND INFORMATION.
