USA, Natural immunity key Nationwide Blood Donor Seroprevalence Survey Data, gathered from blood donors Estimates of population, 16 and older, have developed antibodies Vaccination or infection? March 21st 2021 Seroprevalence, 49.1% Over 16 vaccinated, 13.7% Cumulative reported cases, 8.7% Deaths…

Duration of Antibody Responses after Severe Acute Respiratory Syndrome (2007) n = 176 SARS-specific antibodies were maintained for an average of 2 years Significant reduction of immunoglobulin G in the third year Covid-19: Do many people have pre-existing immunity? But…

Many thanks to Tim and the Zoe team who made this possible.

Are COVID-19 vaccines safe for people with weakened immune systems? Professor Ellie Barnes, Oxford University Causes of immunosuppression Auto-immune conditions (e.g. lupus, rheumatoid arthritis, multiple sclerosis, inflammatory bowel disease, Crohn’s disease) Genetic conditions Chronic diseases, liver, kidney disease, cancer Post…

Vitamin D results YPV result, 22 ng/ml NHS result, 84.4 nmol/L = 33.76 ng/ml Total vitamin D levels above 220 nmol/L are considered ‘High’ and increase the risk of vitamin D toxicity 220 nmol/L = 88 ng/ml United States FDA,…

Vitamin D tests used in this video Your personalised vitamins Single test, £39.99 Year plan, 2 tests and vitamin D supplies to titrate, £75 BetterYou test £32.95 Vitamin D into the body D3 (cholecalciferol), sun, animals or supplement D2 (ergocalciferol),…