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Photoprotection

Photoprotection refers to the ability of an agent to protect the skin from radiation damage, which practically tends to refer to solar waves. Although protective, they may also reduce photosynthesis of molecules (like Vitamin D).

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Human Effect Matrix

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The Human Effect Matrix looks at human studies to tell you what supplements affect Photoprotection.

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Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Supplement Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-b Minor Very High See all 3 studies
There appears to be reduced risk of DNA damage, immunosuppression, and erythema in response to sunlight associated with fish oil consumption. Studies have only investigated higher doses (1,800mg EPA minimum) and it is unsure if these protective effects apply to lower doses
grade-c Notable - See all 3 studies
Mixed results reported. Two randomized, controlled trials report significant protection from UV-induced skin damage with 320-326mg/day cocoa flavanols over 6-24 week time periods. In contrast, another study using high flavanol chocolate (600mg flavanols) over a period of weeks failed to note any increase in the resistance of the skin towards reddening in response to light.
grade-c Minor - See study
An increase in photoprotection (protection of the skin from the sun) has been found with green tea catechin ingestion

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