Brazil's winter prompts health warnings for skin, hair, heart and immunity

Cold, low‑humidity winter conditions are linked to a range of health effects in Brazil. Dermatologists note that low air moisture, hot showers and frequent headwear increase hair dryness, frizz and breakage, especially in curly hair, and advise cooler water, regular conditioning and oil treatments. Skin specialists warn of irritation, cracking and loss of barrier function, recommending warm‑rather‑than‑hot showers, daily moisturisers with hyaluronic acid or ceramides, and continued sunscreen use. Ophthalmologists highlight that dry, windy air can exacerbate dry‑eye syndrome, urging adequate hydration, screen‑break habits and protective eyewear. Cardiologists stress that vasoconstriction in cold weather raises blood pressure, potentially increasing heart‑attack and stroke risk by up to 30 % in susceptible individuals, and recommend monitoring pressure and staying active in warm settings. Public‑health messages from Unimed and other agencies call for up‑to‑date vaccinations and proper respiratory hygiene. Nutrition experts list winter‑supportive supplements such as zinc, vitamin D and spermidine. Pharmacists caution against self‑medication and over‑use of decongestants. A pet‑care campaign in Castilho encourages donations of warm gear for animals. Together, these guidelines aim to mitigate winter‑related health challenges.