Are you properly hydrated?


(The following is an excerpt from The “Plan A” Diet)

How much water do I need to drink?

Are you feeling tired, restless, or irritable? Do you have brain fog? Has your skin lost some of its elasticity? This sounds like a precursor to an advertisement for some miracle drug—but it’s possible you may simply be dehydrated and need to drink more water. Dehydration is quite common in the United States, with some estimates citing 75 percent of the population as being chronically dehydrated.[i] That means that 75 percent of us have a net fluid loss due to lack of water consumption and the possible diuretic effects of drinking caffeinated beverages and excessive alcohol.

Are you properly hydrated?

Water is an often-overlooked component in most diet plans, but I’ve given it priority status on The “Plan A” Diet food pyramid for good reason—daily water intake is crucial for good health. Our brains, muscles, organs, and cells depend on water to function properly. Water is necessary for proper digestion, absorption of nutrients, and to carry waste from our kidneys and livers. Water also helps our bodies convert glucose to energy. Lack of water contributes to several ailments including fatigue, joint pain, high blood pressure, compromised immune function, kidney disease, and weight gain.

The human body is 65 percent to 75 percent water, and several things happen when we fall below that level. According to Dr. James Marcum, when we lose up to just 2 percent of our water, our judgment can become seriously impaired; losing up to 5 percent of water can result in thirst, weakness, nausea, irritability, increased pulse rate, and flushed skin. If we lose up to 10 percent of our water, we may experience headaches, dizziness, and tingling in the limbs. Vision may blur, skin may turn blue, and some may lose the ability to speak or walk clearly. Losing up to 15 percent of our water can result in severe vision and hearing impairment, swelling of the tongue, the inability to swallow, painful urination, and possible signs of delirium. If we lose more than 15 percent of our water, we die.[ii]

So how much water do you need? There are many theories out there, and the most common suggestion is eight 8-ounce glasses per day (64 oz.) for everyone. However, that recommendation may no longer hold water. Today’s rule of thumb is to drink half your weight in ounces. A person weighing 150 pounds would need 75 ounces of water per day. Other authorities recommend between 8–11 daily cups for women and 10–15 daily cups for men. But that includes water from all sources, not just beverages. Subtracting the water we get from food plus the water our body makes, the recommendation translates into 4–7 cups for women and 6–11 cups for men, assuming only moderate physical activity at moderate ambient temperatures.[iii]


lime juice on drinking glass beside sliced limes

Drink enough water so that your urine is very light yellow. Your body will need more water if you’re in a hot climate, physically active, running a fever, or if you happen to be obese. You may want to consider filling bottles or a large empty container each morning with your daily need of clean water; that way you’ll know if you’re drinking what you need. If the budget allows, invest in a whole house water filter which will remove impurities and chemicals while retaining the water’s natural, essential minerals. Add fruit to your water if it will help you drink more. Keep in mind that watery foods such as broths, celery, and melons can contribute to your fluid intake as well.

And don’t forget the kiddos! Studies show that most children arrive at school in a state of mild dehydration that may negatively affect their scholastic performance.[iv] Like adults, children should drink at least half their weight in ounces.

Lastly, although daily fluid intake can come from both food and beverages, it’s important for health and weight management to drink water (or zero-calorie tea) as a replacement for soft drinks, energy drinks, and sugar-filled lattes. If you miss the fizziness of soda, try mixing carbonated water with just a bit of fruit juice.


PS: Let’s stay hydrated spiritually, too! Drink freely from the Water of Life – which is a metaphor referring to how the Holy Spirit works in our lives by providing spiritual cleansing and constant refreshment. This is only one such reference of spiritual water:

It is finished! I am the A and the Z—the Beginning and the End. I will give to the thirsty the springs of the Water of Life—as a gift! (Rev. 21:6, TLB)


[i] Medical Daily, “75 percent of Americans May Suffer From Chronic Dehydration, According to Doctors,” dated July 3, 2013; accessed September 5, 2018.

[ii] Dr. James L. Marcum, MD, Biblical Prescriptions for Life, Small Group Study Guide (Ooltewah, TN: Heartwise Ministries, 2016), 34.

[iii] Dr. Michael Greger, “How Much Water Should We Drink Every Day?” dated May 25, 2017; accessed September 5, 2018.

[iv] Dr. Michael Greger, “Schoolchildren Should Drink More Water,” dated November 21, 2013; accessed September 5, 2018.

Are you properly hydrated?

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