Side Effects and Contraindications of Maca
Maca is a highly nutritious, entirely natural plant used both as food and medicine, often hailed as the “ginseng of South America.” Consuming maca may help strengthen the body and enhance immunity. But what are its potential side effects, and who should avoid it?
Side Effects and Contraindications of Maca
Thyroid enlargement: Maca contains glucosinolates. When consumed in excess alongside low-iodine foods, it may contribute to thyroid swelling. Allergic reactions: Individuals with allergic constitutions may experience hypersensitivity after taking maca—manifesting as pruritus, stinging or burning sensations, erythema, diarrhea, vomiting, nasal congestion, coughing, dyspnea, anaphylactic shock, syncope, or wheezing. Skin issues: Maca helps regulate and increase hormonal secretion; however, this may disrupt endocrine balance. In adolescents, such hormonal fluctuations can trigger acne and other dermatological conditions. Hormonal imbalance: While maca helps modulate hormone secretion and correct endocrine disorders—making it suitable for individuals with diagnosed endocrine imbalances—it is unnecessary—and potentially harmful—for those with normal endocrine function. In healthy individuals, maca supplementation may provoke menstrual irregularities or decreased libido. Gastrointestinal discomfort: People with pre-existing gastrointestinal sensitivities may experience nausea after consuming maca. Exacerbation of “heatiness” (a traditional Chinese medicine concept referring to excessive internal heat): Individuals currently experiencing “heatiness” or those with a constitution prone to “heatiness” may find their symptoms worsened by maca consumption.
Populations advised against maca use: Infants and young children: Although maca is a natural food source capable of rapidly boosting energy and improving sleep quality, its unique bioactive compounds—macaene and macamide—exert hormonal regulatory effects and enhance libido and sexual function. These properties render maca unsuitable for infants and young children, as they may risk premature puberty. Therefore, maca products are not recommended for this age group. Lactating women: Due to maca’s libido-enhancing properties and uncertainty regarding whether its nutritional components might alter breast milk composition, it is prudent to avoid maca during lactation. Pregnant women: During pregnancy, sexual activity is generally restricted to safeguard fetal health. Since maca enhances libido and sexual performance, its use may pose risks to pregnancy maintenance. For safety reasons, maca is not recommended during pregnancy.
Individuals with thyroid disorders: Maca contains glucosinolates. Given that dietary iodine intake is ubiquitous—even if minimal—glucosinolates may interact with iodine and promote thyroid enlargement, potentially aggravating existing thyroid conditions. Minors (adolescents): As minors are still undergoing physical development, emphasis should be placed on consuming diverse, nutrient-rich vegetables and fruits to support healthy growth. From a holistic health perspective, adequate nutrition alone typically ensures optimal development. We hope this information proves helpful to you!
