Micronutrients & recovery
Dietary intake of polyunsaturated fatty acids (PUFAs), specifically DHA from fish oil and walnuts, reduces amyloid-beta (Aβ42) production and protects against its toxicity, thereby slowing cognitive decline in Alzheimer's disease models.
Include sources of DHA, such as fatty fish or walnuts, in your diet to support brain health. While high-dose supplements may help slow cognitive decline in those with mild memory complaints, they are less effective for those with established Alzheimer's, particularly ApoE4 carriers. Focus on dietary sources for prevention.
In summary, it appears that DHA reduces Aβ42 production and protects against its toxicity via multiple mechanisms.
Why this rating
Strong preclinical evidence in mice and cell cultures; human trials show mixed results (protection in MCI, limited in AD, non-significant in some ApoE4 carriers).
Source
Nutrition, Brain Aging, and Neurodegeneration: Table 1.
James A. Joseph et al. · Journal of Neuroscience · 2009
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →