Vitality Check-up :
Fatigue & Burnout Blood Test
with Nutritionist
in Zurich & Geneva

This group of vitamins is involved in virtually every energy-producing pathway in the body. B12, measured here as Holotranscobalamin (the active bioavailable form), is essential for the production of myelin. B9 and B6 work alongside B12 in the methylation cycle, a critical biochemical process that affects mood, energy, and cognitive function. Deficiencies in all four vitamins are extremely common in Switzerland, particularly during winter months.

HbA1c measures your average blood sugar over three months. The HOMA index goes further by calculating insulin resistance directly. Insulin resistance is a condition where the body's cells stop responding efficiently to insulin, forcing the pancreas to produce more and more to achieve the same effect. The result is chronic energy crashes after meals, difficulty concentrating, brain fog, unexplained weight gain, and persistent fatigue — often years before blood sugar levels become abnormal on a standard test.

Iron deficiency is the single most common nutritional cause of fatigue. But the key marker is ferritin, the iron storage protein, not iron itself. Blood iron levels only tell us what is circulating right now; Ferritin reveals the bigger picture. Low ferritin alone, even without anaemia, is sufficient to cause profound tiredness, hair loss, difficulty concentrating, and reduced exercise tolerance. Transferrin provides additional information about iron transport and absorption capacity.

The liver is central to hormone metabolism, toxin clearance, and energy regulation. Impaired liver function slows the clearance of cortisol and other stress hormones, amplifying the effects of adrenal dysfunction and contributing directly to fatigue, mood instability, and hormonal imbalance.

Cortisol is your primary stress hormone, and it follows a precise daily rhythm fundamental to energy regulation. It should be highest in the morning, peaking within 30 to 45 minutes of waking. This peak is called the cortisol awakening response. When it is blunted, the body simply cannot generate the biological readiness needed to feel energised. Low morning cortisol is a direct biological marker of burnout, chronic stress overload, and adrenal fatigue.

Magnesium is involved in more than 300 enzymatic reactions in the body, including energy production, nerve function, and muscle recovery. Deficiency is extremely common in people under chronic stress — and is one of the most frequently overlooked contributors to fatigue, irritability, sleep disruption, and muscle tension.