The Beneficial Role of Natural Endocrine Disruptors: Phytoestrogens in Alzheimer's Disease

Oxid Med Cell Longev. 2021 Sep 3:2021:3961445. doi: 10.1155/2021/3961445. eCollection 2021.

Abstract

Alzheimer's disease (AD) is the most common form of dementia with a growing incidence rate primarily among the elderly. It is a neurodegenerative, progressive disorder leading to significant cognitive loss. Despite numerous pieces of research, no cure for halting the disease has been discovered yet. Phytoestrogens are nonestradiol compounds classified as one of the endocrine-disrupting chemicals (EDCs), meaning that they can potentially disrupt hormonal balance and result in developmental and reproductive abnormalities. Importantly, phytoestrogens are structurally, chemically, and functionally akin to estrogens, which undoubtedly has the potential to be detrimental to the organism. What is intriguing, although classified as EDCs, phytoestrogens seem to have a beneficial influence on Alzheimer's disease symptoms and neuropathologies. They have been observed to act as antioxidants, improve visual-spatial memory, lower amyloid-beta production, and increase the growth, survival, and plasticity of brain cells. This review article is aimed at contributing to the collective understanding of the role of phytoestrogens in the prevention and treatment of Alzheimer's disease. Importantly, it underlines the fact that despite being EDCs, phytoestrogens and their use can be beneficial in the prevention of Alzheimer's disease.

Publication types

  • Review

MeSH terms

  • Alzheimer Disease / drug therapy*
  • Alzheimer Disease / metabolism
  • Alzheimer Disease / pathology
  • Amyloid beta-Peptides / metabolism
  • Animals
  • Endocrine Disruptors / chemistry
  • Endocrine Disruptors / pharmacology
  • Endocrine Disruptors / therapeutic use*
  • Flavonoids / chemistry
  • Flavonoids / pharmacology
  • Flavonoids / therapeutic use
  • Hormone Replacement Therapy
  • Humans
  • Nervous System / drug effects
  • Nervous System / metabolism
  • Phytoestrogens / chemistry
  • Phytoestrogens / pharmacology
  • Phytoestrogens / therapeutic use*

Substances

  • Amyloid beta-Peptides
  • Endocrine Disruptors
  • Flavonoids
  • Phytoestrogens