Tomatoes are rich in cell-protecting antioxidants. Antioxidants are known cancer-fighters, such as prostate and breast cancer. And now lycopene – one of the antioxidants found in tomatoes – is being linked to reduce risk of osteoporosis. Osteoporosis is a degenerative bone disease, usually developing in old age, especially in post-menopausal women.
But the new study at the University of Toronto in Canada, says drinking tomato juice may help stave off osteoporosis. Published in the journal Osteoporosis International, scientists claim consuming 30mg of lycopene from tomato juice (about two glasses) is enough to help prevent osteoporosis. For the research, experts restricted a group of post-menopausal women, ages 50 to 60, from consuming anything containing lycopene for one month, then the study participants were split into four groups for four months. Groups were given either a 15mg lycopene supplement, a glass of tomato juice naturally containing 15mg of lycopene, a gourmet tomato juice with 35mg of lycopene, or a placebo.
After four months, results showed supplementing with lycopene raised serum lycopene, compared to the placebo group. The women consuming lycopene had significantly increased antioxidant capacity, decreased oxidative stress, and decreased bone markers for osteoporosis.
Supplementing diet with whey-based protein may help reduce high blood pressure, a U.S. researcher says.
Nutritional biochemist Susan Fluegel of Washington State University in Spokane says daily doses of commonly available whey brought a more than 6-point reduction in the average blood pressure of men and women with elevated systolic and diastolic blood pressures. Whey is a by-product of cheese-making. “One of the things I like about this is it is low-cost,” Fluegel says in a statement. “Not only that, whey protein has not been shown to be harmful in any way.”
The study, published in International Dairy Journal, finds not everyone drinking the whey-supplemented drink has changes in blood pressure.
The supplement did not lower the blood pressure of subjects who did not have elevated pressure to begin with. That's good, says Fluegel, since low blood pressure can also be a problem. However, blood-pressure reductions — as seen in those with elevated pressure in this study — can bring a 35 percent to 40 percent reduction in fatal strokes, says Fluegel.
Fluegel and colleagues looked at 71 student subjects ages 18-26, but Fluegel says older people with blood pressure issues would likely get similar results. The supplement was delivered in fruit-flavored drinks developed at the university's creamery.
Of the participants, 15.5%, 29.7%, 28.1%, and 21.1% reported being physically inactive at teenage, at 30 years, at 50 years, and in late life respectively; the increase in cognitive impairment for those who were inactive was between 50% and 100% at each time point. When physical activity measures for all four ages were entered into a single model and adjusted for variables such as age, education, marital status, diabetes, hypertension, depressive symptoms, smoking, and BMI, only teenage physical activity status remained significantly associated with cognitive performance in old age.
Middleton added, “As a result, to minimize the risk of dementia, physical activity should be encouraged from early life. Not to be without hope, people who were inactive at teenage can reduce their risk of cognitive impairment by becoming active in later life.”
The researchers concluded that the mechanisms by which physical activity across the life course is related to late life cognition are likely to be multi-factorial. There is evidence to suggest that physical activity has a positive effect on brain plasticity and cognition and in addition, physical activity reduces the rates and severity of vascular risk factors, such as hypertension, obesity, and type II diabetes, which are each associated with increased risk of cognitive impairment.
“Low physical activity levels in today's youth may mean increased dementia rates in the future. Dementia prevention programs and other health promotion programs encouraging physical activity should target people starting at very young ages, not just in mid- and late life,” said Middleton.