Heavy legs, ankle swelling in the afternoon and evening, nighttime cramps, a sensation of heat in the legs—these are symptoms of chronic venous insufficiency, a condition affecting 30-40% of adults that worsens with sedentary habits, heat, prolonged standing, pregnancy, and aging. It's not just a cosmetic issue: venous insufficiency compromises quality of life and, if neglected, can progress to thrombosis, venous ulcers, and serious complications.

How leg venous circulation works

Venous blood must travel up from the legs toward the heart against gravity. The main mechanisms that help: venous valves (which prevent backflow), the calf muscle pump (each contraction of the gastrocnemius muscle compresses the veins and pushes blood upward), breathing (changes in intrathoracic pressure draw blood toward the chest). When valves weaken (valve insufficiency), blood flows backward and accumulates in superficial veins: swelling, heaviness, varicose veins.

Diet and venous circulation

Diet influences venous circulation through several mechanisms: venous tone (the ability of veins to contract), capillary permeability (the tendency of fluids to leak from capillaries into tissues), blood viscosity, and inflammation of the venous wall.

Venoactive flavonoids: bioflavonoids (diosmin, hesperidin, rutin, proanthocyanidins) have documented effects on reducing capillary permeability, increasing venous tone, and reducing inflammation of the venous wall. They're found in: citrus fruits (especially the white pith, rich in hesperidin), blueberries and berries (proanthocyanidins, anthocyanins), dark grapes and moderate red wine (resveratrol, proanthocyanidin oligomers), ginkgo biloba (in specific extracts), horse chestnut (aescin, documented effectiveness against venous insufficiency). These compounds also form the basis of venotonic drugs like Daflon (diosmin+hesperidin) and Venoruton (rutin).

Hydration and blood viscosity

Dehydrated blood is more viscous and flows more slowly through veins, increasing thrombosis risk and worsening venous drainage. Drinking at least 1.5-2 liters daily is essential for blood fluidity. During hot summer periods, when leg swelling worsens due to vasodilation, hydration becomes even more critical. Heat causes venous vasodilation: vessels relax, valves become relatively insufficient, and blood stagnates.

Salt: the main aggravator of fluid retention

As discussed in the article on water retention: salt holds water in tissues. In those with venous insufficiency, excess sodium worsens leg swelling by increasing extracellular fluid volume. Reducing salt to less than 5g daily is one of the most effective interventions for evening leg swelling.

Postural and movement habits: as important as diet

Walking: it's the calf muscle pump that activates with each step. Thirty minutes of walking daily is the minimum to support venous return. Swimming and cycling are even more effective: the horizontal or seated position reduces gravitational pressure on veins. Avoid prolonged immobile standing: the worst enemy of venous circulation. If you work on your feet, alternately raise your heels (pump your calf even while standing). Elevation of lower limbs during rest: 15 minutes with legs raised 20-30 cm reduces swelling. Graduated compression stockings (20-30 mmHg): the most effective physical remedy, worn from morning before swelling forms.

The natural cocktail for venous circulation

Every morning: 150 ml of unsweetened blueberry juice (or a handful of fresh blueberries). At breakfast or lunch: grated organic orange zest on yogurt or salad (hesperidin and bioflavonoids concentrated in the white pith). A cup of green tea (catechins, vascular effects). These three sources of venoactive flavonoids, consumed regularly for 4-6 weeks, have effects on venous tone and capillary permeability comparable to low-dose venotonic drugs. Cost: nearly zero. Side effects: zero.

The calf pump exercise

Do this exercise every hour if you're sitting or standing all day: 20 alternating heel raises (standing, rise onto your toes and lower slowly). One minute of this exercise equals about 5 minutes of walking as a stimulus for venous return. Set a reminder every 60-90 minutes. In 8 hours of work, you complete 8 sets: a little vascular workout distributed throughout your day.

How to choose compression stockings

Graduated compression stockings (tighter at the ankle, progressively looser toward the thigh) are the most effective physical remedy for venous insufficiency. Class 1 (15-21 mmHg): for prevention and mild symptoms. Class 2 (23-32 mmHg): for moderate venous insufficiency, varicose veins, pregnancy. Class 3 (34-46 mmHg): for severe cases, by medical prescription. Put them on in the morning before getting up, when your legs aren't yet swollen: the pressure is much more effective if applied before fluids accumulate. Remove them in the evening before bed and keep your legs elevated.