THE MEDS I TAKE AND WHY – PAGE 20 – POTASSIUM

THE MEDS I TAKE AND WHY

PAGE 20

POTASSIUM

Potassium is an essential mineral and electrolyte vital for managing blood pressure, ensuring proper nerve and muscle function (including a steady heartbeat), and maintaining fluid balance. The pros are significant health benefits, while the main con is the risk associated with imbalanced levels (either too high or too low), especially for individuals with certain health conditions. 

Pros (Health Benefits of Adequate Potassium):

Getting enough potassium, primarily through diet, is linked to several health advantages: 

• Blood Pressure Regulation: Potassium helps manage blood pressure by counteracting the effects of sodium and easing tension in blood vessel walls.
• Reduced Stroke Risk: Higher potassium intake from food is associated with a significantly lower risk of stroke.
• Heart Health: It helps maintain a regular heart rhythm, and proper levels are crucial for overall cardiovascular function.
• Muscle and Nerve Function: As an electrolyte, it facilitates nerve signals and muscle contractions, which can help prevent muscle weakness and cramps.
• Bone Health: A potassium-rich diet may improve bone mineral density and help protect against osteoporosis.
• Kidney Stone Prevention: Potassium citrate, found in many fruits and vegetables, can help prevent the formation of certain kidney stones by reducing calcium levels in urine.
• Blood Sugar Control: Some studies suggest an association between lower potassium intake and an increased risk of type 2 diabetes and insulin resistance, implying potassium’s role in glucose management. 

Cons and Risks:

While essential, both too little and too much potassium can be problematic:

• Hypokalemia (Low Potassium): A deficiency can lead to symptoms like muscle weakness, fatigue, constipation, and potentially life-threatening abnormal heart rhythms. This is rarely caused by diet alone, but rather by conditions like prolonged vomiting, diarrhea, or the use of certain medications (like diuretics).
• Hyperkalemia (High Potassium): Excess potassium in the blood is the primary risk and can be very dangerous, leading to symptoms such as nausea, muscle weakness, and serious heart problems, including cardiac arrest.
• Vulnerability with Kidney Disease: Individuals with chronic kidney disease (CKD) are at high risk for hyperkalemia because their kidneys struggle to remove excess potassium from the body.
• Supplement Caution: High-dose potassium supplements or salt substitutes should generally not be taken without a doctor’s supervision, as it is easy to consume too much and cause a dangerous buildup, especially for those with impaired kidney function or those on specific medications (e.g., ACE inhibitors, potassium-sparing diuretics). The FDA even requires a warning label on some oral products containing over 99mg of potassium due to potential safety concerns. 

The best way for most healthy individuals to get potassium is through a balanced diet rich in fruits and vegetables like potatoes, spinach, beans, and bananas, as the body can regulate levels effectively when intake is from food sources. Always consult a healthcare professional before starting potassium supplements to ensure safe use and the right dosage for your specific health needs. 

Overview:

Potassium is a mineral that is important for many body functions. Food sources include fruits, cereals, beans, milk, and vegetables.

Potassium plays a role in the transmission of nerve signals, muscle contractions, fluid balance, and various chemical reactions.

Potassium is most commonly used for treating and preventing low potassium levels, treating high blood pressure, and preventing stroke. It’s also used for prediabetes and many other conditions, but there’s no good scientific evidence to support these other uses.

Uses & Effectiveness:

Effective for:

• Low levels of potassium in the blood (hypokalemia). Taking potassium by mouth or by IV prevents and treats low levels of potassium in the blood. IV products can only be given by a healthcare provider.

Likely Effective for:

• High blood pressure. Taking potassium can lower blood pressure. Potassium seems to work best for people with high blood pressure, low potassium levels, and high sodium intake. People with high blood pressure should aim to eat foods that provide 3500-5000 mg of potassium daily. This intake of potassium is expected to lower blood pressure by about 4-5 mmHg in people with high blood pressure.
• Kidney stones. Taking potassium citrate can help prevent kidney stones from reoccurring. However, this medication should be prescribed by a healthcare professional. It is unclear whether supplementation with potassium citrate is helpful.

Possibly Effective for:

• Heart disease. Higher intake of potassium from food has been linked to a 13% reduced risk of heart disease when compared with lower intake of potassium from food. But it’s not clear if taking potassium supplements by mouth has the same benefit.
• Stroke. Higher intake of potassium from food has been linked to up to a 20% reduced risk of stroke. But it’s not clear if taking potassium supplements by mouth has the same benefit.

There is interest in using potassium for a number of other purposes, but there isn’t enough reliable information to say whether it might be helpful.

Side Effects:

When taken by mouth: Potassium is likely safe for most people when taken by mouth in amounts of up to 100 mEq (3900 mg) of total potassium daily. In some people, potassium can cause stomach upset, nausea, diarrhea, vomiting, or intestinal gas.

Special Precautions and Warnings:

Pregnancy and breast-feeding:

Potassium is likely safe to consume in amounts typically found in the diet when pregnant or breast-feeding.

Children:

Potassium is likely safe in children when consumed in amounts typically found in the diet.

Disorders of the digestive tract:

Disorders of the digestive tract that might alter the speed food and supplements pass through the body (GI motility conditions):

If you have one of these disorders, do not take potassium supplements. Potassium could build up to dangerous levels in the body.

Kidney disease:

Kidneys that don’t work well have trouble keeping a balanced amount of potassium in the body. If you have a kidney condition, use potassium supplements only with the advice and ongoing care of a healthcare professional.

Interactions:

• Minor Interaction
  Be watchful with this combination 
• Water pills (Potassium-sparing diuretics) interacts with Potassium
  Some “water pills” can increase potassium levels in the body. Taking some “water pills” along with potassium might cause too much potassium in the body. But eating food containing moderate amounts of potassium along with these medications does not seem to increase potassium levels.
• Medications for high blood pressure (ACE inhibitors) interacts with Potassium
  Some medications for high blood pressure can increase potassium levels. Taking potassium supplements along with some medications for high blood pressure might cause too much potassium in the body. But eating food containing moderate amounts of potassium along with these medications does not seem to increase potassium levels.
• Medications for high blood pressure (Angiotensin receptor blockers (ARBs)) interacts with Potassium
  Some medications for high blood pressure can increase potassium levels. Taking potassium supplements along with some medications for high blood pressure might cause too much potassium in the body. But eating food containing moderate amounts of potassium along with these medications does not seem to increase potassium levels.

Dosing:

Potassium is found in many foods, including fruits, cereals, beans, milk, and vegetables. It’s recommended that adult females consume 2.6 grams daily, and adult males consume 3.4 grams daily to maintain adequate nutrition. When pregnant, 2.9 grams should be consumed daily, and when breastfeeding, 2.8 grams should be consumed daily. Recommended amounts for children depend on age. Speak with a healthcare provider to find out what dose might be best for a specific condition.