What are the contraindications?
First, those who are using drugs or prescription medication should seek the counsel of a licensed medical practitioner to discuss whether there are any potential risks. Certain drugs can alter the body’s heat loss mechanisms, while others might make an individual more prone to heat stroke.
Second, those with serious cardiovascular issues must consult their physician – it’s imperative. Prolonged exposure to heat can increase cardiac output and blood flow, while raising the heart rate. This may be too much for those with hypertension, hypotension, congestive heart failure or impaired coronary circulation.
Third, the elderly or very young—for different reasons—should not use a sauna. Children should not because their core body temperature rises much faster than adults. Elderly often should not because their “cool down” mechanisms are not as efficient as normal healthy adults. Of course, there may be exceptions with certain seniors, and of course, it’s best to consult a physician for his or her opinion on the matter.
Fourth, anyone with any of the following issues should generally avoid sauna use: those recovering from alcohol or alcohol abuse, those with an impaired ability to perspire, including- Parkinson's, multiple sclerosis, central nervous system tumors, and diabetes (again, consult a licensed medical professional if unsure), hemopheliacs, those with fever, severe joint injuries, pregnancy, enclosed infections or those with medical implants that may come into contact with heat from the sauna.
In all cases, if there are every any questions or uncertainty, it’s best to consult your doctor or licensed medical practitioner for advice about whether sauna use is safe for you.