There are no definitive studies or reports on whether acorns can be poisonous when eaten raw one by one. Acorns are the fruit of a tree that has some nutritional value and can provide certain benefits to the body when eaten in moderation.

However, because acorns may be contaminated or produce toxic compounds such as tannins, enzymes, and lipid oxidation products under certain circumstances, they may negatively affect human health when eaten raw or in large quantities.

It is therefore recommended that caution be exercised when consuming acorns to avoid overconsumption as well as long-term consumption. In addition, take care to choose fresh and odorless acorns and avoid consuming rotten or spoiled fruits.

Please note: The above content is for reference only and should not be relied upon for medical diagnosis, treatment, or guidance. Please pay attention to your health condition at all times, do not blindly use medication or treatment. If you experience any changes in your condition or feel any discomfort, we recommend that you seek professional help in a timely manner, either by consulting with your doctor online or by visiting an offline medical institution.