When people think about extreme heat, they often imagine discomfort, sweating and dehydration. But heat can become a serious medical threat, especially for older adults, infants, outdoor workers and people living with chronic illnesses. The human body constantly works to keep its internal temperature within a narrow range. When the environment becomes very hot, the body tries to release heat through sweating and increased blood flow to the skin. If heat exposure is intense or prolonged, those mechanisms may not be enough. Heat exhaustion can cause heavy sweating, weakness, dizziness, headache, nausea and fainting. Heatstroke is much more dangerous. It can involve confusion, altered consciousness, seizures and very high body

Imagine having an infection that used to be easy to treat, but the usual medicine no longer works. That is the basic idea behind antimicrobial resistance, often called AMR. It is one of the most important medical problems of the coming decades because modern medicine depends heavily on effective antimicrobials. Antibiotics do not “make bacteria stronger” in the way people sometimes imagine. Instead, bacteria can change over time. When antibiotics kill susceptible bacteria, resistant bacteria may survive and multiply. Resistance can also spread between bacteria through genetic material. The more opportunities bacteria have to encounter antibiotics, especially when medicines are misused or overused, the greater the pressure for resistance. AMR

Artificial intelligence has entered healthcare faster than many people expected. A person can now type symptoms into a chatbot, upload a medical report for explanation, ask an AI tool to summarize a research paper, or use a wearable that claims to detect changes in sleep or heart rhythm. The convenience is enormous. So is the responsibility. The key mistake is to think of AI as either a doctor replacement or a useless toy. Neither description is accurate. AI can be very useful for organizing information, spotting patterns and helping people understand medical language. But health decisions are safety-critical. A confident answer can still be wrong. One reason AI feels so

GLP-1 medicines have moved from being a specialist diabetes treatment to one of the most talked-about medical stories in the world. Drugs in this family, including semaglutide and tirzepatide, are changing how doctors think about obesity, diabetes and several conditions linked to excess weight. The most interesting story, however, is no longer simply “How much weight can someone lose?” The bigger question is: what happens to the rest of the body when these medicines change appetite, blood sugar, body fat and cardiovascular risk? GLP-1 stands for glucagon-like peptide-1, a hormone involved in appetite, digestion and blood-sugar regulation. Some modern medicines mimic this hormone or act on related pathways. In simple