Gastroenterologist shares 5 things you must know about vitamin D: ‘Last point is the most important one’

Much is known about vitamin D, yet misinformation abounds. As such, when Harvard-trained gastroenterologist Dr Saurabh Sethi tried to clear the air, we took notes. “5 things you didn’t know about vitamin D . I am a gastroenterologist. The last point is the most important one,” he said in a post on YouTube Shorts.

According to Dr Sethi

*It is not just a vitamin. It actually works more like a hormone in your body, controlling over 200 genes.

*Food sources are rare. You need to eat piles of salmon, tuna, eggs or mushrooms just to match the vitamin D your skin makes in 15 minutes of the sun.

*Deficiency is usually silent. You can be low in vitamin D for years without any obvious symptoms. It often presents as fatigue, low mood, or frequent infections.

*Too much vitamin D can backfir