Is coffee healthy for you? Depending on the day, caffeine’s most popular source, coffee, gets either praised or punished. With so many differing opinions on the healthfulness of caffeine and coffee- what is the truth? And why does it work for some people and NOT for others?


Drinking coffee first thing in the morning on an empty stomach can spell disaster for so many people. Especially those that are prone to blood sugar issues and chronic stress.

  • Awaken a few hours after falling asleep, hard to get back to sleep
  • Crave sugar or coffee in the afternoon
  • Sleepy in afternoon
  • Fatigue that is relieved by eating
  • Headache if meals are skipped or delayed
  • Irritable before meals
  • Shaky if meals delayed
  • Frequent thirst or urination

These are all indications that your body may be having a difficult time managing blood sugar. Usually, blood sugar regulation is controlled by the liver and pancreas, but when those organs become over-burdened, blood sugar falls too low (hypoglycemia) and triggers your adrenal glands to get involved. The adrenal glands release stress hormones and signal the liver to break down proteins and fats for energy. This causes a lot of bodily stress and inflammation.


Whether someone reacts negatively or positive to coffee is different for each individual, and it will change with one’s diet and health. The two most common coffee tolerance issues I see in my clients are as follows:

Someone who has a history of dieting, malnutrition, or a slowed metabolism will probably not respond so well to coffee at first. This is most likely because those conditions force the body to use the stress response as a coping mechanism for survival due to inadequate fuel. Adding caffeine to their diet will give a sense of “false energy” driving the body into deeper energy exhaustion.


Caffeine intolerance (ie. inability to tolerate coffee —makes you feel wired or jittery) can also be a sign of under-active phase 1 detoxification! Yes, that means that your liver is missing key nutrients and/or conditions that allow it to detoxify caffeine efficiently!

On the other hand, when coffee is used with adequate food and nutrient intake, and when a person is not stuck in the stress response, caffeine in the form of coffee can have a very therapeutic and even “vitamin-like” effect according to Dr. Ray Peat, PhD.

According to Dr. Peat’s research caffeine is a vitamin-like nutrient:

  • Coffee drinkers have a lower incidence of thyroid disease, including cancer, than non-drinkers.
  • Caffeine protects the liver from alcohol and acetaminophen (Tylenol) and other toxins, and coffee drinkers are less likely than people who don’t use coffee to have elevated serum enzymes and other indications of liver damage.
  • Caffeine protects against cancer caused by radiation, chemical carcinogens, viruses, and estrogens.
  • Caffeine synergizes with progesterone, and increases its concentration in blood and tissues.
  • Cystic breast disease is not caused by caffeine, in fact caffeine’s effects are likely to be protective; a variety of studies show that coffee, tea, and caffeine are protective against breast cancer.
  • Coffee provides very significant quantities of magnesium, as well as other nutrients including vitamin B1.
  • Caffeine “improves efficiency of fuel use” and performance: JC Wagner 1989.
  • Coffee drinkers have a low incidence of suicide.
  • Caffeine supports serotonin uptake in nerves, and inhibits blood platelet aggregation.
  • Coffee drinkers have been found to have lower cadmium in tissues; coffee making removes heavy metals from water.
  • Coffee inhibits iron absorption if taken with meals, helping to prevent iron overload.
  • Caffeine, like niacin, inhibits apoptosis, protecting against stress-induced cell death, without interfering with normal cell turnover.
  • Caffeine can prevent nerve cell death.
  • Coffee (or caffeine) prevents Parkinson’s Disease (Ross, et al., 2000).
  • The prenatal growth retardation that can be caused by feeding large amounts of caffeine is prevented by supplementing the diet with sugar.
  • Caffeine stops production of free radicals by inhibiting xanthine oxidase, an important factor in tissue stress.
  • Caffeine lowers serum potassium following exercise; stabilizes platelets, reducing thromboxane production.

If you want to read more from Ray Peat, you can find his full article here.

How to use coffee in your diet to tolerate it better:

  • Don’t consume coffee on an empty stomach (i.e. first thing in the morning!)
  • Save your coffee for after breakfast to avoid raising blood sugar levels
  • Consume coffee with balanced meals containing protein, carbohydrates, and fats
  • If you want to drink coffee in isolation, be sure to add cream (fat), honey/sugar (carbs), and collagen hydrolysate (protein) for best tolerance.
  • Sometimes coffee is best eliminated while you work on building up your nutrition and reducing sources of chronic stress
  • Try transitioning to decaf or half-caf to reduce your caffeine load
  • Make sure you are eating enough food to keep your body out of the chronic stress response, ie. survival mode
  • Support your liver and detoxification system with lots of nutrient dense and easy to digest carbohydrates like ripe fruits along with anti-inflammatory proteins


Looking to upgrade your coffee addition machinery? After a great deal of hands-on research, these are my two favorite machines at a reasonable price point:

  1. Bambino Plus — great for kitchen with limited space or if you’re the only coffee drinker in the house (this is what I use at home).
  2. Barista Express — wonderful full service espresso machine with grinder that is perfect for a house with multiple coffee drinkers and ample counter space.


Be sure to check out the following blood sugar health and liver articles:

  • The organ that can keep you from losing weight (hint: not the thyroid)
  • Overdose of this vitamin can damage your liver
  • How to support your blood sugar

I hope this post helps you modify your coffee habit into a way that works for your health and not against it

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