Welcome to the OPAL website!
The study team hope that you find this website a useful tool for information.
It is aimed at study participants, staff involved in OPAL and the wider research community.
The overall aim of the OPAL study is to try to define a simple and effective dietary intervention
to maintain cognitive function (memory) and retinal function
(which is essential for good vision) in later life.
This is the first study of its kind aiming to slow the decline of cognitive and
retinal function in older people by increasing daily dietary
intake of n-3 long chain polyunsaturated fatty acids (oils most commonly found in fish).
The OPAL study, which is a randomised placebo-controlled trial, has the following primary objectives:
to determine whether daily supplementation over a two year period with 0.7g of n-3 long-chain polyunsaturated fatty acids will slow cognitive decline in people aged 70-79 years living in the UK
to determine whether daily supplementation over a two year period with 0.7g of n-3 long-chain polyunsaturated fatty acids will benefit eye health in people aged 70-79 years living in the UK
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The OPAL study is funded by the UK Food Standards Agency
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