The use of "vegetable blend (proprietary)" to support the glandular system is primarily justified by traditional use rather than strong scientific validation. Historically, various vegetables have been consumed for overall health, with some folk medicine traditions linking specific vegetables (such as cruciferous vegetables like broccoli, kale, and cauliflower) to improved endocrine and glandular health. These vegetables contain phytonutrients, vitamins, and minerals that are believed to support metabolism and hormonal balance.

However, the term "vegetable blend (proprietary)" is vague and does not specify which vegetables are included or in what proportions, making it difficult to assess the precise historical or scientific foundation. While there is some evidence that certain vegetables support general health and may contribute indirectly to glandular function through antioxidant and anti-inflammatory effects, there is limited clinical research directly linking generalized vegetable blends to targeted support of the glandular system.

In summary, the rationale for using vegetable blends for glandular support comes mostly from traditional dietary and herbal practices, rather than from robust scientific studies directly investigating effects on the glandular system. The evidence is therefore rated as modest, reflecting a traditional basis with indirect or limited scientific support.