- There are reports that the research results on the relationship between zinc and nutritional status are not consistent.
- The evidence score is 0, and the reliability is very limited.
- This is information useful for those interested in health management or nutritional balance in specific situations.
Zinc is a component related to nutritional status.
It is discussed in the context of the effects of intake and of checking the body's internal state.
How zinc intake affects our nutritional status has been investigated from various angles. However, when the research results so far are organized, they do not all point to the same conclusion. There are reports that the research results on the association between zinc and nutritional status are not consistent.
The evidence score, an indicator used to evaluate the reliability of the data, is 0, which indicates that the certainty of the information obtained is very low. Specifically, it is a situation where, compared with many other studies, it is difficult to narrow the conclusion down to one. In other words, current scientific knowledge alone is not enough to clearly state how zinc is related to nutritional status.
In a study titled "Association of Zinc with Anemia," it is stated that supplementing zinc may possibly help prevent or improve anemia.
This study examined how zinc intake has an effect. In technical terms, it is reported under a design classified as "other" (an other study design not included in a specific category). In other words, this can be described as an investigation carried out in a format different from a trial conducted under strict controlled conditions. For this reason, it may be premature to judge from this result alone that zinc intake by itself resolves anemia.
There are reports that cellular-level zinc deficiency has been observed in people with a specific health condition.
The study investigated patients with head and neck cancer. The results showed that zinc deficiency was seen in about 65% of the patients. This figure was examined based on intracellular zinc concentration. In technical terms, this research was conducted using an "other" design (an other study design not included in a specific category), and observed zinc status in a group with a specific disease.
There is a report that, in people with a condition called beta-thalassemia major, zinc deficiency does not affect physical growth or the frequency of infection.
This study was conducted on a small patient group of 40 participants and a control group of 30 (a healthy group prepared for comparison). In technical terms, it was carried out using a cross-sectional study (a method that examines conditions at a single point in time). In other words, this was a study that assessed the current state from data collected at a specific time. This result suggests that zinc deficiency may not have a direct effect on growth or the frequency of infection.
| Study | Design | Number of Participants | Duration | Main Result |
|---|---|---|---|---|
| Nutrients (2022, PMID:36432604) | Other study design | Unknown | Unknown | A positive effect was reported |
| Nutrition and cancer (2009, PMID:20155630) | Other study design | Unknown | Unknown | A positive effect was reported |
| Biological trace element research (2018, PMID:28940159) | Cross-sectional study | 40 | Unknown | No clear association was found |
The research includes 40 patients with beta-thalassemia major, a control group of 30, and patients with head and neck cancer.
These research subjects are people with specific diseases, and this can serve as reference material when considering your own condition.
There are only 3 studies, and these include reports from a cross-sectional study and other study designs.
There are reports that the research results on the association between zinc and nutritional status are not consistent.
The reliability of these studies is very limited.
What reports are there on the relationship between zinc and nutritional status?
A. There are reports that the research results on the association between zinc and nutritional status are not consistent. Results are not consistent across multiple studies.
To what extent is zinc deficiency seen in specific patients?
A. There is a report that about 65% of head and neck cancer patients were zinc deficient, based on intracellular zinc concentration.
Does zinc affect growth in patients with beta-thalassemia major?
A. Zinc deficiency is described as common in patients with beta-thalassemia major. However, no result has been found showing a significant effect on physical growth or the frequency of infection.
This review confirmed 3 studies on the relationship between zinc and nutritional status. It was found that the research results are not consistent, and the evidence score is also very low. At present, there is little that can be stated definitively about what effect zinc intake has on the body.
This article is based on limited research data. If you are concerned about your own nutritional status, please try the self-check diagnostic.