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Newborn Probiotic Use Tied to Lower Risk of Type 1 Diabetes

Adding probiotics to an infant’s feedings in the first month of life may reduce the risk of type 1 diabetes for those genetically predisposed to the disease, according to research published online Nov. 9 in JAMA Pediatrics.

THURSDAY, Nov. 12, 2015 (HealthDay News) — Adding probiotics to an infant’s feedings in the first month of life may reduce the risk of type 1 diabetes for those genetically predisposed to the disease, according to research published online Nov. 9 in JAMA Pediatrics.

Researchers looked at an ongoing prospective study from six medical centers — three in the United States and three in Europe. The final study sample included 7,473 children between 4 and 10 years old. Blood samples were taken every three months from age 3 months to 48 months to detect signs of type 1 diabetes. Samples were taken every six months after that. Parents completed questionnaires and food diaries to detail infant feeding and probiotic supplement use from birth to 3 months. Mothers provided information on their diets during pregnancy as well.

The researchers found that probiotic use in the first 27 days was linked to reduced odds of type 1 diabetes by 60 percent for children with the highest risk of developing the disease. These children had the DR3/4 genotype, the researchers said. Children without that genetic makeup didn’t benefit from the early probiotics. And no one seemed to benefit from later probiotic use.

“Early probiotic exposure during the first 27 days is associated with a decreased risk of type 1 diabetes among those who have the highest genetic risk of type 1 diabetes,” lead researcher Ulla Uusitalo, Ph.D., an associate professor in the department of pediatric epidemiology at the University of South Florida in Tampa, told HealthDay. However, Uusitalo noted that because of the study’s design, the researchers “cannot make a conclusion about causality.” But she stressed that because the association was so strong, these findings warrant further study.

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Curcumin Modulates Colonic Microbiota During Colitis and May Prevent Colon Cancer

Published in Gastroenterology

Journal Scan / Research · November 17, 2015

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Abstract

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Noon Best Time to Get Vitamin D From Sun for Minimal Cancer Risk

Abstract

Background

Solar ultraviolet (UV) radiation varies with latitude, time of day, and season. Both spectral UV composition and ambient UV dose lead to different health outcomes at different latitudes. Finding the optimal time for sun exposure, whereby the positive effects of UV exposure (vitamin D) are facilitated and the negative effects (skin cancer, photoimmunosuppression) avoided are the most important consideration in modern skin cancer prevention programs.

Objectives

This paper focuses on the latitude dependency of UVB, UVA, vitamin D production, and skin cancer risk in Caucasians.

Methods

Biologically effective UVB (280–315 nm) and UVA (315–400 nm) doses were calculated using radiative transfer models with appropriate climatologic data for selected locations. Incidences of squamous cell carcinoma (SCC) and cutaneous melanoma (CM) were retrieved from cancer registries and published articles.

Results

Annual doses of UVA radiation decrease much less with increasing latitude than annual doses of UVB. Incidences of CM also decrease less steeply with increasing latitude than incidences of SCC. As SCC is caused mainly by UVB, these observations support the assumption that UVA plays an important role in the development of CM. The variations in UVA (relevant to CM) and UVB (relevant to vitamin D production) over 1 day differ: the UVB : UVA ratio is maximal at noon.

Conclusions

The best way to obtain a given dose of vitamin D with minimal carcinogenic risk is through a non-burning exposure in the middle of the day, rather than in the afternoon or morning.

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Healthy Diets Modulate Gut Microbes and Improve Insulin Sensitivity in the Obese

The Journal of Clinical Endocrinology and Metabolism

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Mediterranean Diet and Brain Structure in the Elderly

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OBJECTIVE

To determine whether higher adherence to a Mediterranean-type diet (MeDi) is related with larger MRI-measured brain volume or cortical thickness.

METHODS

In this cross-sectional study, high-resolution structural MRI was collected on 674 elderly (mean age 80.1 years) adults without dementia who participated in a community-based, multiethnic cohort. Dietary information was collected via a food frequency questionnaire. Total brain volume (TBV), total gray matter volume (TGMV), total white matter volume (TWMV), mean cortical thickness (mCT), and regional volume or CT were derived from MRI scans using FreeSurfer program. We examined the association of MeDi (scored as 0–9) and individual food groups with brain volume and thickness using regression models adjusted for age, sex, ethnicity, education, body mass index, diabetes, and cognition.

RESULTS

Compared to lower MeDi adherence (0–4), higher adherence (5–9) was associated with 13.11 (p = 0.007), 5.00 (p = 0.05), and 6.41 (p = 0.05) milliliter larger TBV, TGMV, and TWMV, respectively. Higher fish (b = 7.06, p = 0.006) and lower meat (b = 8.42, p = 0.002) intakes were associated with larger TGMV. Lower meat intake was also associated with larger TBV (b = 12.20, p = 0.02). Higher fish intake was associated with 0.019 mm (p = 0.03) larger mCT. Volumes of cingulate cortex, parietal lobe, temporal lobe, and hippocampus and CT of the superior-frontal region were associated with the dietary factors.

CONCLUSIONS

Among older adults, MeDi adherence was associated with less brain atrophy, with an effect similar to 5 years of aging. Higher fish and lower meat intake might be the 2 key food elements that contribute to the benefits of MeDi on brain structure.

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