Lymphatic and Immune System

Câncer em vários parentes, e muitos ainda jovens, é só coincidência? Pode ser a síndrome de Li-Fraumeni. Um teste genético pode revelar o risco antes de a doença aparecer.

A Anvisa aprovou um novo remédio que reduz as crises de lúpus. Mas ele serve para todo mundo? Descubra como age e para quem é indicado.

Por que uma vacina de rotina aos 9 anos agora pode chegar aos 2 anos, e por que mulheres já tratadas também entram na lista? Descubra quem pode se vacinar e o prazo que termina em 31/12.

Entenda por que o diagnóstico diferencial é essencial na medicina, quais doenças (inclusive raras) são frequentemente confundidas entre si e o que acontece quando o tratamento é iniciado de forma equivocada.

Entenda como funciona a vacina antitabagismo, por que tentativas anteriores não deram certo e quais fases ainda faltam até que ela chegue aos pacientes.

Entenda por que beijar um recém-nascido pode ser perigoso, a fisiologia por trás da imunidade do bebê e como proteger seu filho no primeiro ano de vida.

Entenda o que é a herpes zóster (cobreiro), como o vírus se reativa, fatores de risco, complicações e tudo sobre a vacina, incluindo quem pode se vacinar pelo SUS.

Entenda o que é o vírus do Nilo Ocidental, como ocorre a transmissão pelo pernilongo (mosquito Culex), quais são os sintomas em humanos, como é feito o diagnóstico, o tratamento disponível e as formas de prevenção.

Saiba diferenciar sinais fisiológicos normais dos sinais de alerta de doenças no recém-nascido durante os primeiros 30 dias de vida, e entenda quais podem ser evitadas com diagnóstico precoce.

Nem todo resultado ruim em cirurgia ou tratamento é erro médico. Entenda a diferença entre risco inerente e as três formas de erro médico, com exemplos simples.

Vitamina D, ferro, ácido fólico, B12, ômega-3: existe suplemento que todo mundo deveria tomar? A ciência mostra que não há lista universal, a suplementação só é indicada para grupos específicos (gestantes, idosos, crianças, veganos), com exame de sangue e orientação médica.

Nas últimas semanas de gravidez, o corpo muda de várias formas: dor nas costas, inchaço e contrações leves são esperados, mas alguns sinais como coceira nas mãos e nos pés, dor de cabeça forte ou redução dos movimentos do bebê merecem avaliação médica. Explicação do que é normal, o que exige atenção e cuidados pouco comentados para atravessar a reta final da gestação com mais segurança.

Entenda o que é a febre maculosa, doença transmitida por carrapatos que pode ser grave se não tratada cedo. Veja quais são os primeiros sintomas, quanto tempo leva para aparecer após a picada, como a doença evolui na pele, os fatores de risco e por que buscar atendimento rápido é essencial para evitar complicações graves.

A Síndrome de Sjögren é uma doença autoimune crônica que causa secura persistente nos olhos e na boca, além de poder afetar articulações, pele, pulmões e outros órgãos. Entenda quais são todos os sintomas e manifestações, como é feito o diagnóstico, quais são os fatores de risco, o que piora os sintomas no dia a dia.

Lipoedema is a chronic disease, almost exclusively affecting women, which causes disproportionate accumulation of fat in the legs and arms, sparing the hands and feet. In this content, you understand what lipoedema is.

Measles has returned to circulate in Brazil in 2026, with an active outbreak in São Paulo affecting mainly unvaccinated infants and adults without both doses of the measles, mumps and rubella vaccine. This article explains the early symptoms (fever, cough, Koplik spots and rash), possible complications, the real risk of severe and fatal cases, and how measles vaccination works in Brazil, including the zero dose for infants.

Did you know that it is possible to "test positive for doping" even without ever using anything to enhance athletic performance? In this article, we explain in simple terms what doping is, which common medicines (such as cold and flu remedies and cough syrups) and even teas, such as coca leaf tea, can lead to a positive result without the person realising.

There is an injection that prevents HIV and may become available for free through the SUS still in 2026. Unlike the daily pill, it is applied only every two months. Understand how this new injectable PrEP works, who will be able to use it and what it has to do with recent cases of HIV remission worldwide.

Lymphatic drainage is safe, but requires prior medical evaluation. Understand the risks and when this massage should not be performed without medical clearance.

Palliative care is not just for the end of life. Understand what it is, when it is indicated and how this care works, before you need to make a decision.

Toxoplasmosis in pregnancy: understand the risks for the baby, the first signs and how to prevent it. Also see what happens in people outside pregnancy.

Understand why national production of dolutegravir is an advance for the NHS, the difference between HIV and AIDS and how to prevent infection.

Does serum therapy really work? For healthy people, science shows that intravenous infusion of vitamins is not superior to oral supplementation and carries avoidable risks.

Understand what science says about the 6,000 calorie diet, raw milk, beef liver, sleep, hydration, sun exposure and healthy habits.

Blood glucose, triglycerides, iron: see which blood tests require fasting, for how long and why. Full blood count and TSH can be done without fasting.

Scorpion sting is a medical emergency. Learn what to do in the first minutes, which symptoms to watch for, when to take the antivenom and how to act far from the hospital.

Sarclisa with portable injector is approved in Europe for treating multiple myeloma. Understand how it works, who can use it, costs and situation in Brazil.

FIT, a new screening test for bowel cancer, helps detect changes before symptoms appear. Understand who should undergo it, how it works, risks, benefits and when to seek medical evaluation.

Understand what is a work accident, commute accident and occupational disease. Find out what changed in worker health standards in 2026, including mental health, burnout and psychosocial risks in the workplace.

Measles returns to concern health authorities worldwide. Understand the symptoms, risks, complications and the importance of up-to-date vaccination in 2026 for outbreak prevention and collective protection.

A new Ebola outbreak in Central Africa put international health authorities on alert in 2026. The World Health Organization (WHO) declared an international emergency following a rapid increase in suspected cases and deaths. In this text, understand what Ebola is, how transmission occurs, what the symptoms are, what the current risk is and why specialists are closely monitoring the situation.

Hepatitis A, B, C, D and E: learn about the symptoms, modes of transmission, diagnosis, treatment and warning signs that indicate when to see a doctor.

Discover the difference between HIV and AIDS, the first symptoms, forms of transmission, tests, diagnosis, treatment and prevention methods. Understand when to seek medical help and how early diagnosis can save lives.

Understand the importance of water for the body, how much you should drink according to your weight, the best times for intake and how to avoid nocturia. Clear content based on physiology.

Understand when and how to supplement iron in newborns and infants, according to the Brazilian Society of Pediatrics and the Ministry of Health, with doses, indications and practical guidance.

Respiratory vaccines: understand which ones to take (flu, COVID-19, pneumococcus and RSV), who should be vaccinated, when to apply and how to protect yourself against serious diseases.

Do you really need to take vitamins every day? In this text, I explain clearly how to choose, when to use and how to improve absorption, avoiding common mistakes that could compromise your health.

Neck pain is not always just posture. In some cases, it can be a sign that requires careful investigation. Understand when cervical pain is common and when it needs more thorough medical attention.

Diet and bowel cancer are directly related, especially when there is frequent consumption of processed meats, excessive red meat, alcohol and low fibre intake. These factors contribute to intestinal inflammation and increase the risk of tumours, mainly colorectal cancer. Often silent at the beginning, the disease can manifest with signs such as blood in the stools, changes in bowel habits and weight loss. The good news is that dietary choices and appropriate screening can significantly reduce this risk and allow early diagnosis.

Understand what palliative care is, when it should be initiated and why it is not limited to terminal illnesses. Learn how it improves quality of life.

In recent days, the increase in cases of gastroenteritis, with closures of some establishments, raises an alert: understand how the disease occurs and what to do to protect yourself.