Health Disclaimer
Effective Date: June 16, 2025
Important health and safety information you must read before using Rays.
CRITICAL HEALTH WARNING
RAYS IS NOT A MEDICAL DEVICE AND DOES NOT PROVIDE MEDICAL ADVICE
This app provides lifestyle recommendations only. Always consult qualified healthcare professionals before making health-related decisions. Do not use this app as a substitute for professional medical advice, diagnosis, or treatment.
Important Health Topics
1. Not Medical Advice
Rays is NOT a Medical Device
Rays is a lifestyle and wellness app that provides general information and recommendations about vitamin D optimization through sun exposure. It is not intended to:
- • Diagnose, treat, cure, or prevent any disease or medical condition
- • Replace professional medical advice, diagnosis, or treatment
- • Provide personalized medical recommendations
- • Function as a medical device or diagnostic tool
- • Substitute for consultations with qualified healthcare professionals
Always Consult Healthcare Professionals
Before using Rays or following any recommendations:
- • Consult with your doctor, dermatologist, or other qualified healthcare provider
- • Discuss your individual vitamin D needs and sun exposure tolerance
- • Review any medical conditions that may affect sun exposure safety
- • Get professional advice about vitamin D testing and supplementation
- • Never ignore professional medical advice because of app recommendations
2. Skin Cancer & UV Radiation Risks
Critical Skin Cancer Warning
UV radiation from sun exposure is a known cause of skin cancer, including melanoma, basal cell carcinoma, and squamous cell carcinoma. Sun exposure also causes premature skin aging, eye damage, and immune system suppression.
Skin Cancer Risk Factors
- • Fair skin, light hair, or light eyes
- • History of sunburns, especially childhood burns
- • Family or personal history of skin cancer
- • Many moles or unusual moles
- • Immune system suppression
- • Previous radiation treatment
- • Certain medications that increase UV sensitivity
Sun Safety Guidelines
Essential Protection
- • Never allow yourself to burn
- • Use broad-spectrum SPF 30+ sunscreen on unexposed skin
- • Wear protective clothing when possible
- • Limit exposure during peak UV hours (10 AM - 4 PM)
- • Wear UV-blocking sunglasses
- • Seek shade when UV index is very high
Warning Signs
- • New, changing, or unusual moles
- • Persistent skin lesions or sores
- • Changes in existing moles (size, color, texture)
- • Excessive redness or burning
- • Unusual skin reactions to sun exposure
- • Pain, tenderness, or bleeding skin lesions
3. Medical Conditions Requiring Caution
If you have any of the following conditions, consult your healthcare provider before using Rays or increasing sun exposure:
Skin Conditions
- • History of skin cancer (any type)
- • Atypical moles or dysplastic nevus syndrome
- • Lupus or other autoimmune skin conditions
- • Photosensitive skin disorders
- • Xeroderma pigmentosum
- • Albinism or severe sun sensitivity
- • Active skin infections or wounds
Systemic Conditions
- • Immune system disorders
- • Organ transplant recipients
- • Cancer patients receiving treatment
- • Kidney or liver disease
- • Hypercalcemia or calcium metabolism disorders
- • Sarcoidosis
- • Eye conditions sensitive to UV exposure
4. Medications & Supplement Interactions
Photosensitizing Medications
Many medications increase sun sensitivity and burning risk. If you take any medications, consult your healthcare provider before following sun exposure recommendations.
Common Types
- • Antibiotics
- • Blood pressure medications
- • Diuretics
- • NSAIDs
- • Acne medications
Psychiatric
- • Antidepressants
- • Antipsychotics
- • Anti-anxiety medications
- • Mood stabilizers
Other
- • Diabetes medications
- • Heart medications
- • Chemotherapy drugs
- • Antihistamines
Vitamin D Supplement Tracking
Important: Rays allows you to track vitamin D supplements for calculation purposes only. We do NOT recommend whether you should or should not take supplements.
- • Vitamin D supplementation decisions should be made with healthcare professionals
- • Blood testing may be needed to determine appropriate dosing
- • Vitamin D can interact with medications and health conditions
- • Too much vitamin D can be harmful (hypercalcemia)
- • Individual needs vary greatly based on health status
5. Geographic & Environmental Risk Factors
High-Risk Environments
High UV Intensity Areas
- • High altitude locations (UV increases ~4% per 1000m)
- • Near equator (stronger year-round UV)
- • Reflective surfaces (snow, sand, water)
- • Clear, thin air conditions
- • Tropical and subtropical regions
Seasonal Considerations
- • Spring: Skin not yet adapted to UV
- • Summer: Peak UV intensity
- • High-altitude skiing: Snow reflection + altitude
- • Beach vacations: Sand + water reflection
- • Travel to different latitudes
App Warning System
While Rays includes warnings about unsafe UV conditions, these are general guidelines only and not official medical advice. Always use your judgment, check local weather services, and prioritize skin safety over vitamin D goals. When in doubt, seek shade and use sun protection.
6. When to Seek Immediate Medical Attention
Seek Emergency Medical Care If You Experience:
Severe Sun Exposure Reactions
- • Severe sunburn with blistering
- • Heat exhaustion or heat stroke symptoms
- • Dehydration with dizziness or fainting
- • Nausea, vomiting, or fever from sun exposure
- • Signs of infection in sunburned areas
Serious Skin Changes
- • Rapidly changing or bleeding moles
- • New growths that don't heal
- • Severe allergic reactions to sun exposure
- • Unusual rashes or skin reactions
- • Signs of skin cancer (asymmetry, irregular borders, color changes)
Emergency Contact: Call 911 (US) or your local emergency number for life-threatening situations. For urgent but non-emergency skin concerns, contact your dermatologist or healthcare provider immediately.
7. Technology & Calculation Limitations
Rays uses estimates and approximations. Our calculations and outdoor detection are not precise medical measurements and should not be treated as such.
Calculation Limitations
- • Vitamin D synthesis varies greatly between individuals
- • Weather data may not reflect local conditions
- • Sensor accuracy depends on device quality
- • Skin coverage and clothing not precisely measured
- • Individual metabolic differences not accounted for
- • Sunscreen use affects calculations
Outdoor Detection Limits
- • May miss brief outdoor exposure
- • Covered areas (patios, etc.) may be misclassified
- • Device sensor limitations affect accuracy
- • Environmental factors can interfere with detection
- • User movement patterns influence detection
- • Not 100% accurate in all conditions
Use as a General Guide Only: Treat Rays recommendations as rough estimates to help you think about vitamin D optimization. Always prioritize skin safety and use your judgment about sun exposure duration and intensity.
8. Evolving Scientific Research
Vitamin D Research is Continuously Evolving
Scientific understanding of vitamin D, optimal levels, and health effects continues to develop. Current research areas include:
- • Optimal blood levels for different populations
- • Individual variation in vitamin D metabolism
- • Health effects beyond bone health
- • Genetic factors affecting vitamin D needs
- • Interaction with other nutrients and medications
- • Long-term effects of supplementation vs. sun exposure
Recommendations May Change
As new research emerges, medical recommendations for vitamin D may change. Rays is based on current scientific literature, but this knowledge is not complete or final. Always consult current medical guidelines and healthcare professionals for the most up-to-date recommendations.
9. No Healthcare Professional Endorsement
No Medical Endorsement
No healthcare professionals, medical organizations, or regulatory bodies have endorsed Rays or its recommendations. The app is developed based on available scientific literature but has not undergone medical review or approval.
- • Not approved by the FDA or any medical regulatory agency
- • Not endorsed by dermatology or endocrinology organizations
- • Not reviewed by medical professionals for clinical accuracy
- • Not intended for use in medical or clinical settings
- • Not a substitute for professional medical assessment
10. Limitation of Liability
Use at Your Own Risk
By using Rays, you acknowledge and accept full responsibility for your health and safety decisions.You understand that sun exposure carries inherent risks, and you assume all risks associated with following any recommendations from the app.
Rays Inc. is NOT liable for:
- • Skin damage, sunburn, or skin cancer from sun exposure
- • Health consequences from vitamin D deficiency or excess
- • Adverse reactions to supplement recommendations
- • Inaccurate outdoor detection or calculations
- • Any health outcomes related to app use
- • Delayed or missed medical diagnoses
- • Any direct, indirect, incidental, or consequential damages
Maximum Liability: Our total liability shall not exceed the amount you paid for the app in the 12 months preceding any claim.
Final Critical Reminders
Your Health is Your Responsibility
Only you and your healthcare providers can make appropriate decisions about your health. Never rely solely on any app for health-related decisions. When in doubt, prioritize safety and seek professional medical advice.
Skin Safety First
No amount of vitamin D is worth damaging your skin or increasing cancer risk. Always err on the side of caution with sun exposure. Use sun protection, avoid burning, and consider vitamin D supplements as an alternative when sun exposure is not safe or appropriate.
Regular Medical Monitoring
Consider regular check-ups with healthcare providers who can monitor your vitamin D status through blood tests, assess your skin health, and provide personalized recommendations based on your individual health profile and risk factors.
Technology is a Tool, Not a Doctor
Use Rays as one tool among many in your health and wellness toolkit. Combine app insights with professional medical care, your own knowledge of your body, and common sense about sun safety and health decisions.
If you do not agree with any part of this Health Disclaimer, do not use the Rays app.
Questions About Health Information
For App-Related Questions
If you have questions about how Rays works, our calculations, or technical features, you can contact us at:
For Health and Medical Questions
We cannot and will not provide medical advice.Please direct all health-related questions to qualified healthcare professionals:
- • Your primary care physician
- • Dermatologist for skin-related concerns
- • Endocrinologist for vitamin D and hormone questions
- • Pharmacist for medication interaction questions
Last updated: June 16, 2025
This Health Disclaimer is effective immediately and supersedes all previous versions.
By using Rays, you acknowledge that you have read, understood, and agree to this Health Disclaimer.