Restless legs syndrome in Belgium: drinks to avoid and ginger for nighttime leg circulation

Pathophysiology of RLS and nutrition

RLS involves central and peripheral dysregulation:

• Dopamine deficiency: RLS is linked to reduced dopamine signaling in the basal ganglia → dopamine agonists (pramipexole, ropinirole) are the reference treatment
• Caffeine → dopamine ↓: caffeine blocks adenosine receptors → short-term dopamine increase, but long-term → downregulation of dopamine receptors → effective DA ↓ → RLS worsened
• Iron and RLS: iron deficiency is the most established risk factor (iron = cofactor of tyrosine hydroxylase, dopamine synthesis enzyme)
• Sugar and insulin resistance: ginger diabetic neuropathy of small fiber nerves peripherally → abnormal sensation lower limbs → RLS worsened or triggered
• Venous circulation: venous stasis in the legs → oxygen deprivation in muscles → involuntary movements at night

Drinks that worsen RLS

Mechanisms of sugar-free ginger shot in RLS

• Peripheral vasodilation: gingerol → vascular relaxation lower limbs → better nocturnal muscle oxygenation → reduction of discomfort sensations
• Iron absorption: natural vitamin C from INTI lemon improves the absorption of non-heme iron by factor 2–3× → iron ↑ → tyrosine hydroxylase activated → dopamine progressively synthesized
• Anti-neuropathy: curcumin → AGE ↓, Nrf2 ↑ → protection of small nerve fibers → reduction of abnormal RLS sensations
• Mild sedative effect: zingerone → interaction with serotonergic receptors → mild nocturnal anxiolysis → lowers sleep threshold
• Zero caffeine: no adenosine blockade → no downregulation of dopamine receptors → no worsening DA deficiency