Results of a new study suggest that long-term, high intake of vegetable protein from such foods as whole grains, soy and tofu, may protect women from early menopause and could prolong reproductive function.
Consuming enriched pasta, dark bread and cold cereal were especially associated with lower risk, while they observed no similar relation to eating animal sources of protein.
"A better understanding of how dietary vegetable protein intake is associated with ovarian aging may identify ways for women to modify their risk of early onset menopause and associated health conditions," write first author. Details appear in the American Journal of Epidemiology.
Early menopause, the cessation of ovarian function before age 45, affects about 10 percent of women and is associated with higher risk of cardiovascular disease, osteoporosis and early cognitive decline, the authors note. Few studies have evaluated how protein intake is associated with menopause timing, they add, and to their knowledge this is the first to look specifically at early menopause.
Researchers evaluated the relationship between diet and risk of early menopause among members of the Nurses' Health Study II (NHS2), an ongoing prospective study of 116,000 women aged 25-42 when they entered it in 1989.
Participants were asked to report how often they ate a single serving of 131 foods, beverages and supplements over the previous year, from "never or less than once a month" to "6+ per day." They observed that women consuming approximately 6.5 percent of their daily calories as vegetable protein had a significant 16 percent lower risk of early menopause compared to women whose intake was approximately 4 percent of calories.
For a woman with a 2,000 calorie per day diet, the authors explain, this is equal to three to four servings of such foods as enriched pasta, breakfast cereal, tofu and nuts, or about 32.5 grams a day. They adjusted for age, smoking, body mass index and other possible confounding factors.
Authors add, "Though relatively few women in our study consumed very high levels of vegetable protein and our power for analyses of more extreme intake levels was limited, women consuming 9 or more percent of their calories from vegetable protein had a hazard ratio of 0.41 (95 percent confidence interval = 0.19-0.88)" compared to those eating less than 4 percent.
For the NHS2, follow-up questionnaires have assessed nurses' lifestyle behaviors and medical conditions every two years. Nearly 90 percent have continued to participate in followup. Diet was assessed five times over the 20-year study, allowing the researchers to capture within-person variation in changes in food and nutrient intake over times, author explains. Participants in the study contributed more than 1 million person-years of follow-up, during which 2,041 women experienced early menopause.
Authors suggest that more prospective studies of their findings are warranted, including studies that compare soy-based and non-soy vegetable proteins.
http://www.umass.edu/newsoffice/article/eating-more-vegetable-protein-may-protect
Latest News
How protein synthesis in de…
By newseditor
Posted 22 Apr
Atlas of mRNA variants in d…
By newseditor
Posted 22 Apr
Mapping microbiome in metas…
By newseditor
Posted 22 Apr
Full-length mRNA packaged i…
By newseditor
Posted 22 Apr
Glucose-sensing mechanism t…
By newseditor
Posted 21 Apr
Other Top Stories
Immunotherapy against clotting factor to protect neuroinflammation…
Read more
How gene activity shapes immunity across species
Read more
Glutamine metabolism affects T cell signaling and function
Read more
Nature of immune cells in the human brain disclosed
Read more
Immune cells could hold key to therapies for spinal cord injuries
Read more
Protocols
A programmable targeted pro…
By newseditor
Posted 23 Apr
MemPrep, a new technology f…
By newseditor
Posted 08 Apr
A tangible method to assess…
By newseditor
Posted 08 Apr
Stem cell-derived vessels-o…
By newseditor
Posted 06 Apr
Single-cell biclustering fo…
By newseditor
Posted 01 Apr
Publications
Neuronal activity rapidly r…
By newseditor
Posted 22 Apr
A perspective on muscle phe…
By newseditor
Posted 22 Apr
Foxp1 suppresses cortical a…
By newseditor
Posted 22 Apr
Single-cell long-read seque…
By newseditor
Posted 22 Apr
Unlocking potential: the ro…
By newseditor
Posted 22 Apr
Presentations
Hydrogels in Drug Delivery
By newseditor
Posted 12 Apr
Lipids
By newseditor
Posted 31 Dec
Cell biology of carbohydrat…
By newseditor
Posted 29 Nov
RNA interference (RNAi)
By newseditor
Posted 23 Oct
RNA structure and functions
By newseditor
Posted 19 Oct
Posters
A chemical biology/modular…
By newseditor
Posted 22 Aug
Single-molecule covalent ma…
By newseditor
Posted 04 Jul
ASCO-2020-HEALTH SERVICES R…
By newseditor
Posted 23 Mar
ASCO-2020-HEAD AND NECK CANCER
By newseditor
Posted 23 Mar
ASCO-2020-GENITOURINARY CAN…
By newseditor
Posted 23 Mar