Vision
Diabetic Retinopathy
Diabetic retinopathy is a diabetes-related condition involving the retina and vision. It is not represented by a single measure: research may assess visual acuity, eye pressure, retinal integrity, electrical retinal responses, or central macular thickness.
A focused look at Diabetic Retinopathy within the broader topic of vision.
This list shows research findings, not treatments. Nothing here replaces medical care. If you have this condition, talk to a doctor.
May not suit people with this condition
Supplements and practices linked to problems for people with this condition.
Strength TrainingpracticeUnclear
A review states that resistance training is generally not recommended for people with proliferative retinopathy because of potential risks.
Open the Strength Training page
The expert view shows every study, dose protocol and source.
What may help
Interventions recorded as helping with this conditionNothing in this library is currently recorded as helping with Diabetic Retinopathy. That means nothing is on file — not that nothing exists. Only 107 of 338 catalogued supplements have a written-up profile so far.
What to avoid
Interventions recorded as making it worse1 listedHighest probability
- →PracticesStrength TrainingCertaintyLowSourceReview
A review states that resistance training is generally not recommended for people with proliferative retinopathy because of potential risks.
Who was studied
- People with a condition
Study result
Authors state resistance training is generally not recommended in proliferative retinopathy due to potential risks.
Open Strength TrainingRationale
Authors state resistance training is generally not recommended in proliferative retinopathy due to potential risks.
How to read the evidence
Evidence tier — overall strength of the evidence for the whole compound
- StrongWell established — backed by strong, consistent human research.
- ModerateSome genuine support, but mostly from small or lower-quality studies. Promising, not proven.
- PreliminaryEarly-stage evidence — a promising hypothesis, not an established effect yet.
- LimitedVery limited evidence — treat this as a hypothesis, not proof.
- InsufficientNot enough good evidence to draw conclusions yet.
Certainty — how sure we can be that the effect is real
- Very highVery sure — strong, consistent evidence
- HighFairly sure — consistent evidence from good studies
- MediumModerately sure — new studies could change this
- LowNot sure — little or mixed evidence
- Very lowVery unsure — almost no usable evidence
Source — where the data comes from
- Meta-analysisPooled analysis of many trials — the strongest evidence
- RCTRandomized controlled trial — a strong human study design
- ClinicalA human clinical study
- Reference knowledgeFrom general health-science or pharmacology references, not a study of this exact claim
- Animal researchStudied in animals, not humans
- Community reportsAggregated user reports — anecdotal signal, not evidence
- TheoreticalMechanism-based reasoning, not yet tested
Study grade — quality of each underlying study (A best, D weakest)
- AHigh-quality — strong, consistent human trials
- BGood — solid evidence with some limitations
- CModerate — limited, small, or mixed-quality studies
- DWeak — preliminary, indirect, or animal-only
Confidence — how strongly the sources back a finding
A 0–100 score from study quality and agreement
Most supplement evidence is graded C–D. Read it as preliminary signal, not proof.
Full write-up
What is it
Diabetic retinopathy is a diabetes-related condition involving the retina and vision. It is not represented by a single measure: research may assess visual acuity, eye pressure, retinal integrity, electrical retinal responses, or central macular thickness. Improvement in one measure should not automatically be understood as resolution of the condition or improvement across every aspect of retinal and visual health.
Evidence-backed options
The evidence for options associated with Diabetic Retinopathy is uneven. Garlic is supported by a randomized controlled trial, while Saffron Extract and Glucosamine have clinical evidence. Melatonin is supported by animal studies, which can indicate potential biological effects but do not establish that the same effects occur in people. Glucosamine’s reported clinical finding does not show a significant inverse association with diabetic retinopathy risk, so it should not be interpreted as evidence of benefit.
Dose, treatment duration, and the time to any observed change are not specified here. As a result, the available findings cannot establish what was taken, for how long, or how quickly an effect might appear. The health status of the studied participants is also not specified, limiting conclusions about how well these findings apply to particular people or stages of diabetic retinopathy.
These options should therefore be read as evidence signals rather than established substitutes for clinical care. Interpretation may also depend on the specific retinal outcome being measured, since changes in visual or retinal measures do not necessarily describe every aspect of the condition. Consultation with a clinician is appropriate when considering information related to a medical condition.
What to avoid
Yoga is flagged because inversions and forceful breath holding may cause temporary changes in pressure and hemodynamics. These changes could increase the risk of retinal hemorrhage, particularly in people with advanced diabetic retinopathy. The concern therefore relates to practices that substantially alter pressure or circulation rather than to a general claim about every movement used in yoga.
Hatha Yoga is also flagged based on its physiological properties. The available rationale does not specify which particular Hatha Yoga practices account for this concern, so the reason cannot be narrowed further here. Anyone with diabetic retinopathy can discuss the suitability of specific activities, including any inversions or forceful breathing, with a clinician familiar with their eye condition.