Study: How to drink coffee to "detoxify" your body

Black coffee or with milk? A study shows that this choice can affect not only the taste, but also your health.

Coffee is more than just a pick-me-up. The popular beverage has numerous health benefits. However, as a study shows, adding milk can significantly reduce these benefits. 

Why milk inhibits the effect

The Graz scientists are focusing on the process of autophagy. This is a self-cleaning program of the body, in which old and defective cellular components are broken down and recycled. This mechanism is primarily triggered by controlled fasting or by coffee consumption. Within a few hours of consuming the beverage, significant autophagy activation was observed in organs such as the liver, muscles, and heart in model organisms.

Interestingly, both regular and decaffeinated coffee can trigger this effect. Researchers suspect that the polyphenols – secondary plant compounds – contained in coffee are responsible for the activation.

However, the addition of animal proteins, such as those found in cow's milk, can block the autophagy process. This is due to the amino acid methionine, which is present in animal protein and can weaken the positive effects of fasting and coffee consumption. 

Therefore, the recommendation is: ideally, drink coffee black or enjoy it with plant-based milk alternatives such as almond or coconut milk. These options do not contain animal proteins that can inhibit autophagy, thus supporting the health-promoting effects of coffee.

Other benefits of coffee

In addition to supporting autophagy, coffee also offers the following benefits:

1. Increased concentration skills

Caffeine blocks the neurotransmitter adenosine, which triggers fatigue, and promotes the release of dopamine and norepinephrine. This increases alertness, shortens reaction time, and improves mental performance. It can also help maintain attention over longer periods, which is particularly beneficial for focused work or studying.

2. Mood enhancers

According to a study by the Harvard School of Public Health, moderate coffee consumption (two to three cups daily) reduces the risk of depression by up to 15 percent. Caffeine stimulates the production of feel-good hormones, such as serotonin, which promotes overall well-being. Furthermore, it can help reduce stress symptoms and stabilize mood in the long term.

3. Promoting kidney function

Coffee has a diuretic effect by stimulating blood flow to the kidneys and increasing urine production. This supports the elimination of toxins and can reduce the risk of kidney stones. Contrary to popular belief, coffee does not dehydrate the body.

Conclusion: When enjoyed in moderation, coffee is a true all-rounder for body and mind: The stimulant can brighten the mood, improve concentration, and even reduce the risk of certain diseases.

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