What if I told you sunlight could save a life?
- Dr. Priti Nanda
- Sep 9
- 1 min read

Recently, Steven Bartlett interviewed Dr. Roger Seheult, who shared how lifestyle shifts can reduce disease risk by 40%.
In my practice as a Functional Medicine Doctor in India, I see this truth daily. Sometimes, what medicines can’t do, nature does effortlessly.
Here are 5 revelations that resonate deeply with my Indian patients:
A Delhi boy with drug-resistant TB healed faster when I prescribed daily sunlight therapy. Just like a US patient Dr. Seheult spoke of — saved by sun, not medicine.
Avoiding the sun is as deadly as smoking. 76% of urban Indians are vitamin D deficient (ICMR, 2019), the same group struggling with diabetes and heart disease.
Hospital beds by windows heal faster. A cardiac patient of mine improved his anxiety & recovery simply by moving his routine to his terrace garden.
Forest bathing isn’t new. Japan calls it therapy. We called it Van Vihar. My stressed IT patients lower sugar levels just by weekend walks in Lodhi Garden.
Your bedroom must be a cave. Even tiny LEDs kill melatonin. A Mumbai PCOS patient fixed her insomnia in 3 weeks after making her room Amarnath dark.
Modern science is only proving what our ancestors already knew.
The difference is I integrate both worlds to help Indians reverse diabetes, heal gut health, and reclaim energy.
Medicines manage disease. Lifestyle reverses it.
Dr. Priti Nanda Sibal
Functional Medicine Doctor | 4 Books | Helping Indians Reverse Diabetes & Chronic Disease




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