Evidence-Based Medical Knowledge You Can Trust
COVID-19 is a respiratory infectious disease caused by SARS-CoV-2, leading to fever, cough, breathing difficulty, and systemic complications.
Emerging research from the Shanghai Tenth People’s Hospital has uncovered a startling link between the SARS-CoV-2 virus and persistent cardiac issues. For millions suffering from “Long COVID,” the mystery of why heart scans appear “normal” despite debilitating symptoms may finally have an answer: Cellular energy failure. The Study: Peering Into the Heart’s Powerhouse Researchers conducted … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. The landscape of COVID-19 continues to evolve as we move through 2026. While the virus has become a part of our daily lives, new strains like BA.3.2 (nicknamed “Cicada”) and the XFG family are currently the dominant variants in the United States. For families and … Read more
Quick Summary COVID variant BA 3.2 is not widely documented in major global health databases as of current verified data. Insufficient data exists to confirm it as a distinct, clinically recognized variant. Most discussions likely refer to sublineages of the Omicron family. Clinical guidance should follow established evidence from Omicron variants unless new peer-reviewed data … Read more
Quick Summary Background A large observational dataset from England analyzed safety and effectiveness of mRNA COVID-19 vaccination in children and adolescents. The analysis used health records from hundreds of thousands to millions of individuals, including matched vaccinated and unvaccinated cohorts. The topic gained attention after public commentary on social media referencing study findings, particularly claims … Read more
Myocarditis, or inflammation of the heart muscle, has been a topic of discussion since the rollout of COVID-19 vaccines. A viral video circulating on social media shows a young woman in a hospital describing sudden chest pain initially thought to be a heart attack, later diagnosed as heart inflammation via catheterization with no arterial blockage. … Read more
A groundbreaking July 2025 study published in the journal Infection has provided compelling new evidence supporting the biological basis of long COVID. Researchers detected SARS-CoV-2 protein fragments inside extracellular vesicles (EVs) — tiny, naturally occurring packages in the blood — from patients experiencing persistent symptoms long after their initial COVID-19 infection. This discovery, achieved through … Read more
Is SARS-CoV-2 a Hidden Driver of Cancer Risk What the Latest Research Suggests
Early Kidney Injury Detection in Long COVID Biomarkers
Persistent taste loss after infection with COVID-19 has remained unexplained for many patients. A recent study analyzing taste-cell genetics identified a biological abnormality in specific taste receptor cells responsible for sweet, bitter, and umami perception. Researchers used the WETT (Whole-Mouth Taste Test) to compare patient reports with objective measurements. The results showed a clear match … Read more
People living with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and Long COVID often experience severe symptom flare-ups after even small amounts of physical or mental effort. This pattern is called Post‑Exertional Malaise (PEM). Recent clinical observations suggest the problem may start before activity even begins. Multiple body systems may already be impaired: When the body attempts … Read more
Medically Reviewed and Compiled by Dr. [Adam N. Khan], MD. New COVID strain symptoms can look similar to earlier versions of COVID-19, but some patterns have shifted over time. Most recent strains continue to spread through respiratory droplets and close contact. Symptoms range from mild cold-like signs to severe breathing problems. What Is a New … Read more
Yes, Diarrhea is a recognized symptom of COVID-19. It can occur alone or with other symptoms such as fever, cough, fatigue, and loss of taste or smell. COVID-19 affects not only the lungs but also the digestive system. In some patients, diarrhea appears early and may even be the first sign of infection. Medical research … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. A COVID and Flu Test at Home allows you to check for COVID-19 and influenza without visiting a clinic. These tests use a nasal swab and give results in about 15–30 minutes. Health agencies such as the Centers for Disease Control and Prevention (CDC) confirm … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Quick Summary The COVID incubation period is the time between exposure to the SARS-CoV-2 virus and the start of symptoms. Most people develop symptoms within 2 to 5 days, but it can range from 2 to 14 days. Some individuals remain asymptomatic yet can still … Read more
Medically Reviewed and Compiled by Dr. Adam N. Khan, MD. Introduction Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), the virus that causes COVID‑19, is primarily known for its respiratory manifestations. However, gastrointestinal (GI) involvement, including diarrhea, has been well‑documented in clinical studies and systematic reviews. This article examines the evidence, mechanisms, clinical presentation, differential considerations, … Read more