Medications - Individuals who are using prescriptions drugs should seek the advice of their physician or pharmacist for possible changes in the drugs effect when the body is exposed to infrared waves or elevated body temperature. Diuretics, barbiturates, and beta-blockers may impair the body’s natural heat loss mechanisms. Anticholinergics such as amitriptyline may inhibit sweating and can predispose individuals to heat rash or, to a lesser extent, heat stroke. Some over-the-counter drugs, such as antihistamines, may also cause the body to be more prone to heat stroke.
The Elderly - The ability to maintain core body temperature decreases with age. This is primarily due to circulatory conditions and decreased sweat gland function. The elderly should operate the sauna at a lower temperature and for no more than 15 minutes at a time.
Cardiovascular Conditions - Individuals with cardiovascular conditions or problems (hypertension/hypotension), congestive heart failure, impaired coronary circulation or those who are taking medications which might affect blood pressure should exercise caution when exposed to prolonged heat. Heat stress increases cardiac output and blood flow in an effort to transfer internal body heat to the outside environment via the skin (perspiration) and respiratory system. This takes place primarily due to major changes in the heart rate, which has the potential to increase by thirty (30) beats per minute for each degree increase in core body temperature.
Alcohol / Alcohol Abuse - Contrary to popular belief, it is not advisable to attempt to “sweat out” a hangover. Alcohol intoxication decreases a person’s judgment; therefore, he/she may not realize when the body has a negative reaction to high heat. Alcohol also increases the heart rate, which may be further increased by heat stress.
Chronic Conditions / Diseases Associated with a Reduced Ability to Sweat - Multiple Sclerosis, Central Nervous System Tumors and Diabetes with Neuropathy are conditions that are associated with impaired sweating.
Hemophiliacs / Individuals Prone to Bleeding - The use of infrared saunas should be avoided by anyone who is predisposed to bleeding.
Insensitivity to Heat - An individual with insensitivity to heat should not use an infrared sauna.
Menstruation - Heating of the low back area of those who are menstruating may temporarily increase menstrual flow.
Joint Injury - If you have a recent (acute) joint injury, it should not be heated for the first 48 hours after injury or until the swelling subsides. If you have a joint or joints that are chronically hot and swollen, these joints may respond poorly to vigorous heating of any kind.
Implants - Metal pins, rods, artificial joints, or any other surgical implants generally reflect infrared waves and thus are not heated by this system. Nevertheless, you should consult your physician prior to using an infrared sauna.
Pacemaker / Defibrillator - The magnets used to assemble this wooden sauna can interrupt the pacing and inhibit the output of pacemakers. Please discuss with your doctor the possible risks this may cause.
High Blood Pressure - Short-term deliberate cold exposure will elevate systolic blood pressure by 20 mm Hg or more.
Vasoconstriction – When exposed to cold water immersion, the muscles around your blood vessels tighten to make the space inside smaller.