Vitamin C is one of the most remembered nutrients when it comes to health and immunity. However, as with any other compound, excess can damage the body. The integration must be carried out with caution and under professional guidance.
What are the risks of excessive consumption?
According to the functional clinical nutritionist and the walnut specialist Vanessa Giglio, if ingested in quantities very recommended above, vitamin C can cause gastrointestinal discomfort such as nausea, diarrhea and abdominal pain. In addition, there is the risk of renal calculation formation in the predisposed people.
“Excess can cause stomach pain, diarrhea, nausea and, in some people, even kidney stones. Therefore, taking on high doses without medical advice should not be done”, warns the endocrinologist and metabologist of Dr. Paula Pires of Sbem.
The daily recommendation for adults varies from 75 to 90 mg. Doses above 2,000 mg per day can be considered harmful.
Sources of Vitamin C Main foods
The good news is that vitamin C can be easily obtained in food without the need for supplements in most cases. Among the main sources there are:
- Acerola
- Guava
- kiwi
- Strawberry
- Orange
- Lemon
- Also
- Papaya
- Red pepper.
Who should take integration into consideration?
Integration is often indicated in specific situations, such as:
- People with very restrictive diets or low consumption of fruit and vegetables;
- Smokers, since smoking increases the demand for nutrients;
- Patients in conditions that increase oxidative stress, always with a professional guide.
- People frequently low immunity.
“Most people get vitamin C only with food. Integration may be necessary, but always with medical indications,” says Dr. Paula.
Vitamin C deficiency symptoms
The lack of vitamin C can manifest itself in different ways, among the most common symptoms, highlight experts: fatigue, falling into immunity, slow healing and gingival bleeding. In serious and rare cases of today, Scurry can occur, a disease historically known to influence long wages on long travel without access to fresh fruit.
Source: Terra

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