Eat carrot, squash and other yellow vegetables. Well that might not be enough cause it should be backed-up by other essential nutrients, they work in synergist.
Having a healthy balance diet is a sure way of getting all the nutrient requirement. If cannot be done, one can resort to taking supplements such as retinyl palmitate. It is a form of vitamin A – a synthetic alternate for retinyl acetate. It is beneficial when used in right way and right dose, it is harmful otherwise.
This synthetic vitamin is popular in sun screens, in about two-fifths of United States skin cream. According to National Toxicology Program, it can speed up the formation of skin cancer. This is based on the results of animal studies. Test animal coated with mixture of retinyl palmitate and skin cream and exposed to ultraviolet light.
I cannot find any data on occurrence to humans. But any product of doubt should be avoided. Refrain from using any skin cream with retinyl palmitate content.
Synthetic Vitamin A is added skin cream as anti-aging agent. The development of cancer will really make anyone stop aging – you know what I mean.
Retinyl palmitate should be consumed in moderation. Intake should not exceed the Daily Tolerable Upper Levels set by Unite States Institute of Medicine or it should be based n Recommended Dietary Allowances.
- 0–3 years: 600 µg or 2000 IU
- 4–8 years: 900 µg or 3000 IU
- 9–13 years: 1700 µg or 5665 IU
- 14–18 years: 2800 µg or 9335 IU
- 19+ years: 3000 µg or 10,000 IU
Overdosed will result to Hypervitaminosis A. The liver stored retenoids will reach its maximum limit and might cause birth defects, liver problems, reduced bone mineral density resulting to osteoporosis, coarse bone growths, skin discoloration, hair loss, too much skin dryness/peeling, angular cheilitis and intracranial hypertension.
High doses in short period of time will cause rapid onset of toxicity. Symptoms are nausea, vomiting, headache, dizziness, loss of muscular coordination and blurred vision.
Natural Vitamin A such as beta carotene never causes toxicity.