Depression, hair loss, backaches; all linked to one missing vitamin: Delhi-based ortho surgeon warns of a ‘super nutrient’ crisis

In a world where wellness trends change faster than seasons and every nutrient seems to come with dramatic promises, a Delhi based orthopaedic and sports surgeon has spotlighted a far simpler truth. Dr Obaidur Rahman, currently practicing at Dr Ram Manohar Lohia Hospital, shared an Instagram video that ties a wide range of mental and physical health concerns to a single, often ignored nutrient. His post, which forms the basis of the report he shared with followers, argues that the body’s struggles with mood, hormones and muscle pain frequently trace back to low Vitamin D.

The Silent Deficiency Behind Loud Symptoms

From depression and anxiety to irregular cycles, hair thinning, persistent cramps and lower back aches, many symptoms that appear unrelated may point to the same biological issue. In the video, Dr Rahman explains that nearly eight out of ten Indians run low on Vitamin D, especially during the winter months when sunlight exposure drops sharply. He describes the vitamin as a pro hormone that regulates serotonin, inflammation, muscle strength and reproductive health.

According to the report on his Instagram page, low Vitamin D reduces serotonin production, which can trigger mood dips, anxiety and brain fog. It also disrupts the HPO axis, the communication system between the brain and ovaries, resulting in irregular menstrual cycles and heightened PMS symptoms. A deficiency increases uterine prostaglandins, making period cramps more severe, and weakens core muscles, contributing to chronic lower back pain. Elevated inflammation further worsens these issues.

Sunlight, Food and Smart Supplementation

In the transcript shared through his post, Dr Rahman says the solution begins with the right kind of sunlight. He clarifies that only low angled sunlight between 9 am and 2 pm provides adequate UVB rays for Vitamin D synthesis. Those who cannot step outdoors during this period can rely on dietary sources such as fatty fish, egg yolks, walnuts and certain seeds.

The surgeon adds that in severe deficiency cases, doctors commonly prescribe a 60,000 IU Vitamin D supplement, which has shown rapid improvement in patients. He encourages individuals experiencing at least three symptoms to get tested for Vitamin D levels along with B12, ferritin, TSH and CRP to rule out overlapping causes.

A Growing Body of Global Evidence

Dr Rahman’s message echoes findings highlighted in a recent UNILAD Tech report on advancements in Vitamin D research. As discussed in The Independent, new data presented at the American Heart Association’s Scientific Sessions 2025 suggests that personalised Vitamin D dosing, monitored every three months, may significantly reduce the risk of recurrent heart attacks. Researchers at the Intermountain Medical Center in Utah found that maintaining optimum Vitamin D levels above 40 ng/mL was associated with a 52 percent reduction in repeat cardiac events.

Although scientists advise caution until larger studies confirm the results, the evidence strengthens the case for treating Vitamin D as a foundational nutrient rather than an afterthought.

As Dr Rahman emphasises in his post, the path to better mood, steadier hormones, fewer cramps and stronger muscles may be far more straightforward than most people realise. Correcting Vitamin D levels, he says, often brings faster relief than expected. In a health landscape filled with trends and conflicting advice, his takeaway remains refreshingly simple: prioritise sunlight, track your levels and do not hesitate to supplement when needed.

Adding to the growing evidence on the broad effects of Vitamin D, US-based nutrition expert Dr. Eric Berg has highlighted lesser-known symptoms that may signal deficiency. In a recent YouTube video, he pointed to unusual signs such as night sweats, mood swings, low motivation, panic attacks, chronic fatigue, muscle weakness, joint stiffness, and even lack of meal satisfaction. Berg explained that standard blood tests often miss tissue-level deficiencies and stressed that correcting Vitamin D through supplementation, diet, cofactors like magnesium and K2, and sensible sun exposure can rapidly improve both physical and mental well-being.