Dietary change is often a big help in relieving the symptoms of POTS. Drinking more water improves symptoms for nearly all patients. Most patients are encouraged to drink at least 64 ounces (two litres) of water or other fluids each day. Alcohol has been shown to drastically exacerbate all types of orthostatic intolerance due to its vasodilation and dehydration properties. In addition to its adverse effects, it interacts unfavourably with many of the medications prescribed to POTS patients.
Eating frequent, small meals can reduce gastrointestinal symptoms associated with POTS by requiring the diversion of less blood to the abdomen. Increasing salt intake, by adding salt to food, taking salt tablets, or drinking sports drinks and other electrolyte solutions, is a treatment used for many people with POTS; however, salt is not recommended for all patients. Increasing salt is an effective way to raise blood pressure in many patients with orthostatic hypotension by helping the body retain water and thereby expand blood volume. Different physicians recommend different amounts of sodium to their patients.
Diets high in carbohydrates have been connected to impaired vasoconstrictive action. Eating foods with lower carbohydrate levels can mildly improve POTS symptoms.
Caffeine helps some POTS patients due to its stimulative effects; however, other patients report a worsening of symptoms with caffeine intake.
Tilting of bed to an angle of roughly 30 degrees can also help reduce symptoms. (Feet up, head down.)
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