Nutrition 2018: New data confirm health benefits of plant-based diet

We present some top-line findings from these studies below. When reading these summaries, it is important to bear in mind that while the abstracts presented at Nutrition 2018 were evaluated and selected by a committee of experts, the papers have not undergone the same rigorous standard of peer review that is applied to scientific journals.

So, we should consider these findings as “preliminary results,” until they are properly assessed.

Read the abstracts at this link.

Meat Company Finds Americans Are Afraid of Hot Dogs

Meat brand Applegate finds that 47 percent of consumers are scared to discover the ingredients in hot dogs, while 24 percent of millennials never purchase them.

Read the survey results here.

I find surveys like this amusing.  Interview 1000 people and extrapolate the findings to all Americans.  The click bait title is great too.  It’s so misleading I had to copy it verbatim.

Vitamin B12 Breakthrough for more complete Vegetarian and Vegan diets

Vitamin B12 (known as cobalamin) is an essential dietary component but vegetarians are more prone to B12 deficiency as plants neither make nor require this nutrient.

But now a team, led by Professor Martin Warren at the University’s School of Biosciences, has proved that common garden cress can indeed take up cobalamin.

The amount of B12 absorbed by garden cress is dependent on the amount present in the growth medium, and the Kent team was able to confirm B12 uptake by showing that the nutrient ends up in the leaf.

I can’t wait for the silly money and marketers to grab this and run.

Read the source article here.

 

Vegan Diet Rapidly Improves Type 2 Diabetes Markers in Adults

The 16-week randomized controlled trial in 73 adults showed that participants who ate a diet of vegetables, grains, legumes, and fruits significantly improved their overall metabolic condition, say Hana Kahleova, MD, PhD, of the Physicians Committee for Responsible Medicine in Washington, DC, and colleagues.

Previous studies have shown that the prevalence of diabetes is 46% to 74% lower in people who eat a plant-based diet compared with meat lovers in the general population, according to background information in the article.

A vegan diet has also been shown to improve glycemic control in type 2 diabetes better than calorie-restricted, low-carbohydrate diets, the researchers note.

You can access the Medscape article here.

This is a link to the online abstract.

Reminder — Beer, wine and whiskey are vegan!

To Weigh or Not to Weigh

The National Weight Control Registry has published several studies on the habits of those who have successfully achieved and maintained significant weight loss over 10 years (4, 5, 6, 7). Their findings are based on the tracking of over 10,000 individuals through detailed questionnaires and annual follow-up surveys designed to identify behavioral and psychological characteristics and strategies used to maintain weight loss. 75% weigh themselves at least once a week.

Here’s a short literature review on weighing habits in the processes of losing weight and maintaining weight loss.  Read the source article here.

I completed my annual National Weight Control Registry survey this morning.

For the first time in a very long time I reported a weight loss since the last follow up.

When I tell people I’ve lost 200 pounds they are always surprised and ask how I did it.

Well, you’ll just have to buy the book when I finish writing it.

(Eat Like an Asian) A Healthy Asian A Posteriori Dietary Pattern Correlates with A Priori Dietary Patterns and Is Associated with Cardiovascular Disease Risk Factors in a Multi-ethnic Asian Population

Results

We identified a “healthy” dietary pattern, similar across ethnic groups, and characterized by high intakes of whole grains, fruit, dairy, vegetables, and unsaturated cooking oil and low intakes of Western fast foods, sugar-sweetened beverages, poultry, processed meat, and flavored rice. This “healthy” pattern was inversely associated with body mass index (BMI; in kg/m2) (−0.26 per 1 SD of the pattern score; 95% CI: −0.36, −0.16), waist circumference (−0.57 cm; 95% CI: −0.82, −0.32), total cholesterol (−0.070 mmol/L; 95% CI: −0.091, −0.048), LDL cholesterol (−0.054 mmol/L; 95% CI: −0.074, −0.035), and fasting triglycerides (−0.22 mmol/L; 95% CI: −0.04, −0.004) and directly associated with HDL cholesterol (0.013 mmol/L; 95% CI: 0.006, 0.021). Generally, “healthy” pattern associations were at least as strong as a priori pattern associations with cardiovascular disease risk factors.

Conclusion

A healthful dietary pattern that correlated well with a priori patterns and was associated with lower BMI, serum LDL cholesterol, total cholesterol, and fasting triglyceride concentrations was identified across 3 major Asian ethnic groups.

Full abstract here.

Eat like an Asian.

Higher Fruit and Vegetable Intake Associated With Lower Total and Cause-Specific Mortality in a Nonlinear Dose-Response Manner

Results: Our study documented 28,333 deaths during follow-up. The 3rd quintile of fruit and vegetable intake was associated with the lowest hazard ratio (HR) of total mortality (HR, 0.87, 95% CI, 0.83-0.90, P nonlinear <0.001) compared to the 1st quintile. The nonlinear dose-response relationship plateaued at about 5 servings/day (svg/d), but above that level, higher intake was not associated with additional risk reduction. We found similar nonlinear associations for CVD, cancer and respiratory disease mortality. Compared to fruit and vegetable intake <1.5 svg/d, the intake level ≥5 svg/d was associated with HRs (95% CI) of 0.84 (0.75-0.93), 0.82 (0.72-0.93) and 0.55 (0.44-0.67) for cancer, CVD and respiratory disease mortality, respectively. Among individual fruits and vegetables, the associations of intakes with mortality were heterogeneous. Higher intakes of most fruit and vegetable subgroups were associated with lower total mortality, whereas higher intake of starchy vegetable such as peas and corn was not associated with total mortality.

Read the full abstract here.

Non-linear dose response.  What would The Ultimate Vegan do with this data?

Fat and Getting Fatter

Trends in Obesity and Severe Obesity Prevalence in US Youth and Adults by Sex and Age, 2007-2008 to 2015-2016

JAMA. Published online March 23, 2018. doi:10.1001/jama.2018.3060

Age-standardized prevalence of obesity among adults increased from 33.7% (95% CI, 31.5%-36.1%) in 2007-2008 to 39.6% (95% CI, 36.1%-43.1%) in 2015-2016 (P?=?.001) (Table 2). Prevalence increased among women, and in adults aged 40 to 59 years and 60 years or older. The observed increases in men and adults aged 20 to 39 years did not reach statistical significance. There were no significant quadratic trends. The adjusted model also showed a significant overall linear trend for obesity among adults (P?<?.001; data not shown).

Age-standardized prevalence of severe obesity in adults increased from 5.7% (95% CI, 4.9%-6.7%) in 2007-2008 to 7.7% (95% CI, 6.6%-8.9%) in 2015-2016 (P?=?.001). Prevalence increased in men, women, adults aged 20 to 39 years and 40 to 59 years. There was no significant linear trend among adults 60 years and older. There were no significant quadratic trends. The adjusted model also showed a significant overall linear trend for severe obesity (P?<?.001; data not shown).

OK…I know I’m obsessive about this obesity trend.  But that’s what happens when your peak BMI used to be 53+.  Many people have told me I should write a book.  Let’s just say I’m working on it.  A book is not a collection of blog posts.  I am not going to publish a book until I am satisfied I’ve done the best writing job I possibly can.
I just returned from a week away.  I didn’t step on the scale.  I weighed myself today for the first time in a week.  BMI holding steady around 26.
Read the source study here.

Taiwanese Vegetarians and Omnivores: Dietary Composition, Prevalence of Diabetes and IFG

Background

The diabetes epidemic in Asia and particularly in China emerged simultaneously with increased meat consumption and higher proportion of energy intake from animal protein and fat [1]. Compared with Westerners, Asians tend to incur diabetes at a younger age and at a lower body mass index (BMI), possibly due to genetic susceptibility in combination with environmental exposures [2]. Vegetarian diets have been associated with a lower prevalence [3] and incidence [4] of diabetes among Seventh day Adventists. Previous clinical trials have shown vegetarian diets improve glycemic control [5] and insulin sensitivity [6]. Although several small studies reported lower glucose level and better insulin sensitivity in Taiwanese vegetarians than omnivores [7][9], no study thus far has examined whether a vegetarian diet protects against diabetes in Chinese ethnic Asian population, a high risk population that may incur diabetes despite having a normal BMI value [2]. Moreover, Asian diets tend to be lower in meat and higher in plant foods compared with Western diet. It remains unknown whether a diet completely avoiding meat and fish would further extend the protective effect of a plant-based diet. In addition, most studies on Asian vegetarians tend to compare vegetarians from religious groups with omnivores from the general population [7]. Religious and spiritual practices (a main determinant of vegetarian dietary practice in Asia) may be associated with social and emotional support which may confound health outcomes [10], [11].

Conclusion

We found a strong protective association between Taiwanese vegetarian diet and diabetes/IFG, after controlling for various potential confounders and risk factors.

The full study report can be found here.

 

Type of vegetarian diet, obesity and diabetes in adult Indian population

…vegetarianism in India is associated with unique characteristics. It is usually a lifelong pattern and adherence crosses multiple generations; it generally comprises high consumption of whole grains, legumes, nuts and seeds and dairy with spices and seasonings unique to the Indian diet. Hence, the combination/or the pattern of vegetarian diet may yield different findings than similar studies conducted in the West and it is thus possible to assess dietary associations with chronic diseases which have been difficult in the West due to low frequency. This study uses data from the third National Family Health Survey (NFHS-3, 2005–06), a survey of 109,041 Indian households which collected information on a wide range of dietary, societal, lifestyle, and environmental determinants of morbidity and chronic ailments including diabetes [16]. The NFHS-3 provides a unique opportunity to examine associations between types of vegetarian diet and diabetes and obesity in a large, nationally representative sample.

In this large, nationally representative sample of Indian adults, lacto-, lacto-ovo and semi-vegetarian diets were associated with a lower likelihood of diabetes. These findings may assist in the development of interventions to address the growing burden of overweight/obesity and diabetes in Indian population. However, prospective studies with better measures of dietary intake and clinical measures of diabetes are needed to clarify this relationship.

Interesting study with limitations as noted by the researchers.  Go here for the full study report.