Is it possible to get too much vitamin C? Yes, but it’s also possible that you may not be getting enough to support important immune functions in your body. I happen to love this vitamin. It does so much for our health and is readily available in so many fruits and vegetables. The RDA of vitamin C is 75 – 90 mg/day for adults, but as in most RDA for vitamins and minerals, it is not enough to keep your blood levels high.
Vitamin C is a water-soluble vitamin. Water-soluble vitamins dissolve in water and are not stored in the body. They are eliminated in our urine, so excess amounts are excreted, thus overdose is not a concern. But it’s still important not to exceed the safe upper limit of 2,000 milligrams a day to avoid stomach upset and diarrhea.
Our bodies cannot make vitamin C. In order to reap the health benefits of vitamin C, you must have a continual supply in your diet, or take a dietary supplement.
Eating vitamin C-rich foods is the best method to ensure an adequate intake of this vitamin. While many common foods contain vitamin C, the best food sources are citrus fruits. One orange, a kiwi fruit, 6 oz. of grapefruit juice or 1/3 cup of chopped sweet red pepper each supply enough vitamin C for one day.
Still, American Dietetic Association spokeswoman Dee Sandquist, RD, suggests doing your best to work more fruits and vegetables into your diet before taking supplements.
“Strive to eat nine servings of fruits and vegetables daily, because you will get a healthy dose of vitamin C along with an abundance of other vitamins, minerals, and phytochemicals that are good for disease prevention and overall health,” she says.
- Cantaloupe, 1 cup: 59 mg Vitamin C
- Orange juice, 1 cup: 97 mg
- Broccoli, cooked, 1 cup: 74 mg
- Red cabbage, 1/2 cup: 40 mg
- Green pepper, 1/2 cup, 60 mg
- Red pepper, 1/2 cup, 95 mg
- Kiwi, 1 medium: 70 mg
- Tomato juice, 1 cup: 45 mg
I know what you are thinking. Most Americans eat on the go, fast food, or simple don’t eat enough fruits and vegetables a day to get 50 mg of vitamin C, let alone 500 mg. Especially parents of special needs kids and their picky eating habits. I know only one friend that has her son eat this many vegetables a day, and he is also on the gf/cf diet. She is one smart cookie and started him out at a young age eating fruits and vegetables. I wish I’d done that with my sons at an early age. I am now struggling with getting my son with autism to try new fruits and vegetables. My older son’s palate is much more daring and he likes to try a variety of new recipes; even if they include vegetables. But since vitamin C is water-soluble, veggies lose its vitamin C when cooked. Raw veggies are best, but sometimes just not a reality for most families.
Why do we need vitamin C?
The body needs this vitamin to keep it in good working order. Also known as ascorbic acid, vitamin C helps hold body cells together, aids in wound healing, assists in bone and tooth formation, strengthens the blood vessel walls, is vital for the function of the immune system, and improves absorption and utilization of iron. It is also a natural anti-histamine.
Vitamin C is an antioxidant and it works with vitamin E as a free-radical scavenger. Studies suggest that vitamin C reduces the risk of certain cancers, heart disease, stroke, and cataracts.
Stress reduces our bodies vitamin C supply. Vitamin C can benefit individuals whose immune system is weakened by stress. Because it is one of the nutrients sensitive to stress, it is the first nutrient to be depleted in alcoholics, smokers and obese individuals.
Vitamin C is heavily concentrated in the brain and crucial to brain function. The earliest signs of deficiency is confusion and depression. Studies have shown vitamin C to improve cognition and alertness.
Vitamin C supplements are plentiful on the market. Something you should consider is the source of the vitamin. Most vitamin C supplements are derived from corn. This created a problem for my oldest son since he showed an allergy to corn. I found a corn and citrus-free version by Twinlabs called Allergy C. It’s made from sago palm. Keep in mind that sago palm contains salicylates if your child reacts to them. I give it with the morning digestive enzyme TriEnza that contains No Phenol digestive enzyme.
I give my son with autism a vitamin C supplement. He gets 250 mg in the morning and another 250 mg after school. This helps maintain a more even blood level than taking all 500 mg at once. When he is sick with a cold I up the dose to 750-1,000 mg/day. He takes a corn-based supplement since he has phenol sensitivity and no allergy to corn.
Filed under: Biomedical interventions, Diet, Supplements | Tagged: antioxidants, Biomedical interventions, fruits and vegetables, healing autism and adhd, health, healthy diet, immune system, Joanne Allor, phenols, RDA, Supplements, Vitamin C | 1 Comment »