EFFECTS OF SPINACH EXTRACT ON SATIETY
A new study found in
the Journal
of the American College of Nutrition examines
how consuming the concentrated extract of thylakoids found in spinach can
reduce hunger and cravings. Thylakoids encourage the release of satiety
hormones, which is very beneficial in slowing down fat digestion. The article
"Acute Effects of a Spinach Extract Rich in Thylakoids on Satiety: A
Randomized Controlled Crossover Trial" is an Open Access article available
from the Journal of the American College of
Nutrition, the official
publication of the American College of Nutrition.
The study examines the effect of consuming a single dose of
concentrated extract of thylakoids from spinach on satiety, food intake,
lipids, and glucose compared to a placebo. Sixty people (30 males and 30
females) classified as overweight or obese took part in a double-blind
randomized crossover study. They consumed either the spinach extract or a
placebo in random order at least a week apart. Using blood samples, their lipid
and glucose levels were measured before a normal breakfast, followed by a dose of
the extract and standard lunch four hours later. After another four hours,
pizza was served, and throughout the interval, various blood tests and
responses were gathered.
The results showed that the spinach extract containing
thylakoids increased satiety over a two-hour period compared to a placebo.
There were no differences in plasma lipids and energy intake at dinner, but
males showed a trend toward decreased energy intake. Thylakoid consumption may
influence gender-specific food cravings -- in a previous study, it was found
that in women, a reduced urge for sweets was significant after a single dose of
the spinach extract and the reduced urge for sweets was sustained throughout
the study.
Article co-author, Frank L. Greenway MD, summarizes:
"The reduction in hunger and the desire for salty food that we saw in this
study might make thylakoids particularly useful for people with high blood
pressure and associated weight problems."
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