PARTNERS

Black tea lowers the rate of blood pressure variation

Measures of blood pressure variation have been associated with cardiovascular disease and related outcomes. The regular consumption of black tea can lower the blood pressure level, but its effects on blood pressure variation have yet to be investigated.

A clinical trial conducted by researchers from Australia, Russia and Netherlands and published on The American Journal of Clinical Nutrition was aimed to assess the effects of black tea consumption on the rate of ambulatory blood pressure variation.

Men and women (n = 111) with systolic blood pressure between 115 and 150 mm Hg at screening were recruited in a randomized, controlled, double-blind, 6-mo parallel-designed trial designed primarily to assess effects on blood pressure. Participants consumed 3 cups/d of either powdered black tea solids (tea) or a flavonoid-free caffeine-matched beverage (control). The 24-h ambulatory blood pressure level and rate of measurement-to-measurement blood pressure variation were assessed at baseline, day 1, and 3 and 6 mo.

Across the 3 time points, tea, compared with the control, resulted in lower rates of systolic (P = 0.0045) and diastolic (P = 0.016) blood pressure variation by 10% during nighttime (2200–0600). These effects, which were immediate at day 1 and sustained over 6 mo, were independent of the level of blood pressure and heart rate. The rate of blood pressure variation was not significantly altered during daytime (0800–2000).

These findings indicate that a component of black tea solids, other than caffeine, can influence the rate of blood pressure variation during nighttime. Thus, small dietary changes have the potential to significantly influence the rate of blood pressure variation.

American Journal of Clinical Nutrition

LATEST NEWS

The latest issue of “Industrie Alimentari” is now available

  In this issue, we publish a scientific evaluation dedicated to the lupine as an ingredient in bread-making, and the effects on the physico-chemical properties...

Regulation EU 2024/1451 as regards certain food additives

  Commission Regulation (EU) 2024/1451 of 24 May 2024 amending Annex II and Annex III to Regulation (EC) No 1333/2008 of the European Parliament and of the Council as...

Enoberg celebrates 40 years!

  1984-2024: a story of courage and passion   In 2024 ENOBERG blows out 40 candles. An important achievement that rewards the commitment, professionalism and determination of those...

ASCOLTATE IL PODCAST DI "ALIMENTI FUNZIONALI"

DOVE TROVARE LE NOSTRE RIVISTE

8-12/09/2024, RIMINI
24-26/09/2024 - NORIMBERGA, GERMANIA
9-12/10/2024 - MILANO
16-17/10/2024 - VERONA
5-7/11/2024 - DUBAI, EAU
6-7/11/2024 LA ROCHELLE, FRANCIA
12-15/11/2024 MILANO
18-20/11/2024 - SAHANGHAI, CINA
19-21/11/2024 - FRANCOFORTE, GERMANIA
24-26/11/2024 - NORIMBERGA, GERMANIA
26-28/11/2024 BORDEAUX, FRANCIA
18-22/01/2025 - RIMINI
2-5/02/2025 - COLONIA, GERMANIA
5-7/02/2025 - BERLIN, GERMANIA
16-18/02/2025 - RIMINI
23-25/02/2025 - BOLOGNA
16-18/03/2025 - DÜSSELDORF, GERMANIA
18-22/05/2025 - DÜSSELDORF, GERMANIA
27-30/05/2025 - MILANO

CATALOGO LIBRI

CATALOGO RIVISTE