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 diarrhea, unexplained fatigue, weight loss. Understand what are the first signs of celiac disease and Crohn's disease, 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 exam and why these deaths occur.

Did you know that it is possible to "fail a doping test" even without ever having used anything to improve athletic performance? In this article, we explain in simple terms what doping is, which common medications (such as flu remedies and cough syrups) and even teas, like coca leaf tea, can lead to a positive result without the person realizing it.

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

Does psyllium cause weight loss? Learn what science really shows about its effects on cholesterol, blood glucose, intestines, satiety, and weight loss.

The first signs of colon cancer in the bathroom include blood in the stool, changes in the shape or consistency of stool, and persistent changes in bowel habits (diarrhea or constipation). In daily life, fatigue, weight loss without apparent cause, and recurrent abdominal pain may also occur. Diagnosis begins with the fecal occult blood test and is confirmed by colonoscopy.

Lipfendra (enlicitide) is the first FDA-approved PCSK9 inhibitor tablet 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 outbreak of explosive diarrhea from the USA reaching Brazil? See what cyclosporiasis is, its symptoms, prevention, and when to seek medical care.

Discover whether walking right 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.

Sea algae rich in calcium is trending on social media, but does it work better than traditional calcium? Explanation of how science evaluates the risks and says who it's worth it for

Blood glucose, triglycerides, iron: see which blood tests require fasting, for how long and why. Complete 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 it clearly.

FIT, a new test used in colorectal cancer screening, helps detect changes before symptoms appear. Understand who should have it done, how it works, risks, benefits, and when to seek medical evaluation.

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

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

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

Understand what changed in the treatment of gastritis and ulcer in 2026. Learn how the diagnosis is made, 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, less known adverse effects and when to seek medical evaluation.

Hepatitis A, B, C, D and E: learn about the symptoms, transmission routes, diagnosis, treatment and warning signs that indicate when to seek medical care.

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 initially. Understand the signs, causes, altered exams, 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 guidelines.

Understand how cannabidiol (CBD) works 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 can compromise your health.

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

If you've 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, this has a medical explanation. This association between coffee and a more "accelerated" intestine is common and, in most cases, does not represent any health problem.

Medical update redefines strategy against bacteria 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 routine of many people, often associated with the idea of "taking care of health". But, from a medical point of view, this practice requires more judgment than it appears. Not all supplementation is necessary and, in some cases, it can pose risks.

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

Although sugar is often 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.