Nutrition and Immunity: Lessons for COVID-19

Philip C. Calder The role of the immune system is to protect the individual against pathogenic organisms. Nutrition is one of multiple factors that determines the immune response and good nutrition is important in supporting the immune response. Immunity can be impaired in older people, particularly those who are frail, in those living with obesity, […]

Could Vitamin D Help Ward Off Suicide?

Joseph Mercola Suicide is a serious public health risk and the 12th leading cause of death in the U.S. A 2023 study of U.S. veterans found those with vitamin D de ciency who were prescribed vitamin D had a 64% lower risk of suicide when compared to those who didn’t take a supplement. This adds […]

Protective Effect of Vitamin D Supplementation on COVID-19 Related Intensive Care Hospitalization and Mortality: Definitive Evidence from Meta-Analysis and Trial Sequential Analysis

Christiano Argano et al. The COVID-19 pandemic represents one of the world’s most important challenges for global public healthcare. Various studies have found an association between severe vitamin D deficiency and COVID-19-related outcomes. Vitamin D plays a crucial role in immune function and inflammation. Recent data have suggested a protective role of vitamin D in […]

Vitamin D Resource Page

Joseph Mercola A growing body of evidence shows that vitamin D plays a crucial role in disease prevention and maintaining optimal health. … While scientists refer to vitamin D as a vitamin, it is actually a steroid hormone obtained from sun exposure, food sources, and supplementation. … Another critical point to remember is you shouldn’t […]

Vitamin D Toxicity – A Clinical Perspective

vitamin d, calcium, tablets

Ewa Marcinowska-Suchowierska et al. Vitamin D Toxicity–A Clinical Perspective Confusion, apathy, recurrent vomiting, abdominal pain, polyuria, polydipsia, and dehydration are the most often noted clinical symptoms of vitamin D toxicity (VDT; also called vitamin D intoxication or hypervitaminosis D). VDT and its clinical manifestation, severe hypercalcemia, are related to excessive long-term intake of vitamin D, […]

Cod Liver Oil: The Number One Superfood

pill, yellow, isolated

Krispin Sullivan Cod liver oil is very good for you, more than you ever knew. Research studies ranging from 1918-2001 give cod liver oil an A+ rating. This marvelous golden oil contains large amounts of elongated omega-3 fatty acids, preformed vitamin A and the sunlight vitamin D, essential nutrients that are hard to obtain in […]

From Seafood to Sunshine: A New Understanding of Vitamin D Safety

two silver fishes on round white ceramic plate

Christopher Masterjohn Vitamin D may be one of the most fundamentally important building blocks available to us for creating and sustaining vibrant health. In addition to its classically understood role in bone formation and calcium absorption, research has uncovered myriad roles for vitamin D, ranging from increasing muscular coordination to preventing cancer, heart disease, autoimmune […]