Digestive System

Dá para saber que a ferritina está baixa só olhando o rosto? A resposta tem um fundo de verdade e um alerta importante sobre pele, cabelo, unhas e boca.

Zinco em falta, ruído branco com limite, audiometria após os 3 anos e saltos do desenvolvimento: o que os pediatras atualizaram e como aplicar em casa.

Comprimido, sublingual ou injeção: qual repõe melhor a vitamina B12? O novo consenso brasileiro surpreendeu ao mostrar que ninguém ainda provou a resposta. Entenda o que isso muda para você.

Cansaço, coceira e inchaço podem esconder uma doença no fígado? Sim, e muitas vezes só aparecem tarde. Veja os sinais e quando investigar.

A dor no peito depois de comer pode ser só gás preso, mas também pode ser um sinal do coração. Veja os sinais que fazem toda a diferença e o que fazer se não houver remédio em casa.

Hérnia inguinal, umbilical, femoral, epigástrica, incisional, de hiato e de disco: entenda causas, sintomas, riscos, tratamento e recidiva de cada tipo.

Sentir tremor, suor frio ou tontura durante ou depois do treino pode ser hipoglicemia. Entenda por que isso acontece, os sintomas completos, o que fazer na hora, como prevenir e quando esse sinal pode indicar outra condição de saúde.

Bebidas muito quentes podem aumentar o risco de câncer de esôfago? Entenda a relação com o esôfago de Barrett, os sintomas, fatores de risco, prevenção e tratamento.

Adoçante artificial faz mal? Descubra o que a ciência realmente diz sobre sucralose, estévia e aspartame: riscos, mitos e cuidados.

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.

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.

O que é a Doença de Creutzfeldt-Jakob, quais os sintomas, como é feito o diagnóstico e o que a ciência já descobriu sobre tratamento e pesquisa.

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.

Paracetamol, ibuprofeno e dipirona em excesso podem intoxicar o fígado e os rins. Veja doses de risco, sintomas de alerta e quando procurar ajuda.

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.

Esteatose hepática é o acúmulo de gordura no fígado, ligado a obesidade e diabetes. Veja alimentos que pioram e ajudam, sintomas, riscos, tratamento e o papel da semaglutida (canetinhas emagrecedoras).

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.

Swelling, persistent diarrhoea, unexplained fatigue, weight loss. Understand what the first signs of coeliac disease and Crohn's disease are, when these symptoms warrant medical investigation and how the path to diagnosis works.

Understand, based on scientific studies, why colonoscopy is considered the most effective examination for preventing colorectal cancer, what are the real risks during the procedure, what is the actual chance of death related to the examination and why these deaths occur.

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.

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.

Does psyllium make you lose weight? Learn what science really shows about its effects on cholesterol, blood glucose, bowel function, satiety and weight loss.

The first signs of bowel cancer in the bathroom include blood in the stool, change in the shape or consistency of the stool, and persistent alteration of bowel habit (diarrhoea or constipation). In daily life, fatigue, unexplained weight loss, and recurrent abdominal pain may also appear. Diagnosis begins with the faecal occult blood test and is confirmed by colonoscopy.

Lipfendra (enlicitide) is the first PCSK9 inhibitor tablet approved by the FDA to reduce LDL cholesterol. It is indicated for patients already taking statin at maximum dose who still have high cholesterol, and is taken once daily on an empty stomach.

Is there a risk of the USA explosive diarrhoea outbreak reaching Brazil? See what cyclosporiasis is, its symptoms, prevention and when to seek medical care.

Discover whether walking shortly after meals is good or bad for your health, based on studies on blood glucose, digestion and necessary precautions.

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

Calcium-rich seaweed is trending on social media, but does it work better than traditional calcium? Explanation of how science assesses the risks and says who should consider it

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.

Inguinal and femoral hernia: learn what they are, what the symptoms are, risk factors, when to operate and when to go to the emergency room. A doctor explains clearly.

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.

Understand what peptides are, how they work in the body, their benefits, risks, medical indications and the necessary precautions regarding the new weight loss and longevity craze.

Understand what Barrett's Oesophagus is, its main symptoms, causes, risk factors, diagnosis and treatment options. Know when reflux deserves attention.

Understand what has changed in the treatment of gastritis and ulcers in 2026. Learn how diagnosis is performed, which tests can replace endoscopy and what are the new treatments for Helicobacter pylori.

Understand the possible relationship between Mounjaro® (tirzepatide), tinnitus, dizziness and hearing changes. See symptoms, lesser-known adverse effects and when to seek medical evaluation.

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.

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.

Liver problems can emerge without symptoms in the early stages. Understand the signs, causes, altered test results, medications and how to prevent liver diseases.

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.

Understand how cannabidiol (CBD) acts in the body, its main indications, benefits, side effects and what the National Health Surveillance Agency says about its use in Brazil.

Have you heard of coffee enema?

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.

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.

If you have already had coffee and, a few minutes later, felt an almost immediate urge to go to the bathroom, know this: you are not alone and, more importantly, there is a medical explanation for it. This association between coffee and a more "accelerated" bowel is common and, in most cases, does not represent any health problem.

Medical update redefines strategy against bacterium associated with gastritis, ulcer and gastric cancer

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.

The use of vitamins has become common in the daily routine of many people, often associated with the idea of "taking care of health". However, from a medical point of view, this practice requires more careful consideration than it may seem. Not all supplementation is necessary and, in some cases, it can pose risks.

Anaphylaxis is a severe allergic reaction with rapid onset and potentially fatal consequences. Unlike common allergies, it is not limited to a single organ; it is a systemic response that can compromise the skin, lungs, cardiovascular system and gastrointestinal tract simultaneously. In practice, it is a medical emergency.

Although sugar is frequently associated with weight gain, it is not the main culprit: understand the true mechanisms behind weight loss.

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.