Was dir fehlt, und woran du es merkst.

A

Seeing worse at dusk, dry eyes? The eye is often first to notice a vitamin A deficiency, though it's rare in healthy people. Which symptoms belong to it, how much you ...

B1

Tingling in your feet, tiredness, racing heart, and does heavy sweating belong too? Vitamin B1 turns sugar into energy for nerves and heart, and the body only stores i...

B2

Cracked corners of the mouth, chapped lips, a red tongue? Vitamin B2 keeps skin and mucous membranes in order, and a deficiency rarely comes alone. Which symptoms are ...

B3

Skin that burns where the sun hits it, a sore tongue, irritable mood? Vitamin B3 works in every cell; a real deficiency is rare, while too much niacin from tablets is ...

B5

Tired, irritable, tingling feet? A real vitamin B5 deficiency is almost impossible, because pantothenic acid is found in nearly every food. Which symptoms are proven, ...

B6

Cracked corners of the mouth, tingling feet, irritable mood? Vitamin B6 builds messenger substances and blood pigment; a real deficiency is rare, but too much from tab...

B7

Thinning hair, brittle nails, flaky skin around the nose and mouth? A real biotin deficiency is rare, and there's almost always a trigger behind it. Which symptoms rea...

B9

Folate is the vitamin of cell division: which symptoms are typical, why weight gain isn't one of them, which blood value counts and what actually helps.

B12

Tingling in your hands, forgetfulness, constantly tired? A vitamin B12 deficiency develops over years and often affects the nerves before the blood. Which symptoms are...

C

Constantly tired, bleeding gums, bruises for no reason? If vitamin C is missing for months, it turns into scurvy, and that still exists today. Which symptoms really be...

D

Why almost everyone lacks vitamin D in winter, which symptoms are behind it, and how much you really need.

E

Unsteady on your feet, tingling feet, weak muscles? A vitamin E deficiency is rare, and it's almost always caused by impaired fat absorption. Which symptoms really fit...

K

Bruises for no reason, nosebleeds, gums that bleed when you brush? Vitamin K helps blood clot, and easier bleeding is the only proven symptom in adults. Which symptoms...

Ca

Tingling around the mouth, cramps in the hands, brittle nails? The body quietly compensates for a lack of dietary calcium by drawing it from the bones for years. Which...

Cl

Chloride, together with sodium, regulates fluid balance: how a deficiency develops, which symptoms occur, and how to correct it.

Cr

Craving sweets, tired, the weight's creeping up, and chromium is supposedly to blame? A real chromium deficiency is so rare it's described almost only in artificial nu...

Cu

Anaemic even though iron doesn't work, tingling in your feet? Copper deficiency is rare in healthy people, but a real risk after stomach surgery or with high zinc inta...

Fe

Tired, pale, hair falling out? Which symptoms are typical, which blood value counts, and which foods refill your stores.

I

Tired, cold all the time, throat feels tight? Iodine deficiency stays silent for a long time, until the thyroid starts to grow. Here's which symptoms really belong to ...

K

Muscle weakness, cramps, heart palpitations: how a potassium deficiency develops, how it shows up, and which foods deliver plenty of potassium.

Mg

Calf cramps, a twitching eyelid, inner restlessness? A magnesium deficiency rarely comes from diet alone — usually losses from medication, alcohol or diarrhoea are inv...

Mn

Tired, thinning hair, mood in the dumps, and manganese is supposedly to blame? A manganese deficiency isn't documented in healthy people; too much manganese is the mor...

Mo

A trace element hardly anyone knows: what molybdenum does in the body, when it's lacking, and which foods provide it.

Na

Headaches, nausea, dizziness, sudden unsteady walking? A sodium deficiency almost never comes from too little salt — usually there's too much water in the body. Which ...

P

Muscle weakness, bone pain, shortness of breath? Phosphate deficiency is almost never caused by diet alone, but by illness, medication, an iron infusion, or eating aga...

Se

Constantly tired, hair thinning, putting on weight? Selenium deficiency is rare in Germany, even though our soils are poor in it. Here's which symptoms really belong t...

Zn

Constantly catching colds, slow-healing wounds, brittle hair and nails? Zinc works in hundreds of enzymes but has no storage in the body. How to spot a zinc deficiency...

All vitamins at a glance: what they do, how much you need, and how a deficiency shows up in each case.

All minerals and trace elements at a glance: functions, daily requirements and the symptoms when something's missing.

When the body lacks nutrients over a longer period: how malnutrition develops, how to recognise it, and how to prevent it.