Obesity & Eating Disorders Flashcards
(45 cards)
A BMI over what equals overweight or obese
Over 25 = overweight
Over 30 = obese
Obesity global epidemic stats
- Rates have tripled since 1975
- 38 million children under 5 were overweight or obese in 2019
- 39% of the world adult population was overweight with 13% obese in 2016
Why has obesity risen?
- Portion sizes
- Convenience food
- Food abundance/exposure
- Flavour enhancers
- Alcohol
- Snacking
- Speed of eating
Drivers of obesity:
How does a sedentary lifestyle add to this?
- Reduced energy expenditure
- Exercise increases glucose uptake and mitochondrial activity
Drivers of obesity:
Sleep
Sleep disruption creates hormonal imbalance that promotes overeating and weight gain
- Reduced glucose tolerance and insulin sensitivity
- Inflammatory pathways are activated
Work on sleep hygiene - epsom salts, stress, valerian, B6
Drivers of obesity:
Chronobiology (shift work, sleep deprivation, exposure to light at night increase adiposity)
Irregular eating patterns affect circadian rhythm and glucose control
Drivers of obesity: processed foods - palatability
Strong dopamine stimulators - fat, starch, alcohol, caffeine
Bliss point - combining fat, sugar and salt to maximise dopamine release
Artificially sweetened drinks have a 47% higher risk of increased BMI
Drivers of obesity:
High cortisol
An overactive HPA axis includes high GI consumption, stress, pain, alcohol, sleep deprivation
Stress can equal eating 50% more food and eating energy dense comfort foods
Drivers of obesity: Microbiome
E.g Lack of akkermansia munciniphilia
Drivers of obesity:
Genes
E.g A SNP on FTO is a strong predictor of obesity
Insulin resistance causes and risk factors:
Reduced physical activity
Chronic stress
Poor methylation
Dysbiosis
Signs and symptoms of insulin resistance
Lethargy
Hunger
Brain fog
Overweight
High blood pressure
High blood glucose
Naturopatic approach to insulin resistance
- Stabilise blood glucose levels
Increase fibre - it slows gastric emptying and a slower release of glucose
Restrict calories
Increase protein especially at breakfast as it helps normalise insulin secretion
Avoid processed food
B vits, chromium, magnesium
Naturopathic approach to insulin resistance
- Reduce inflammation
- Avoid inflammatory foods e.g damaged fats and refined carbs
- Increase antioxidants
- Prioritise sleep
- Green tea polyphenols help HBA1C
- Prebiotic foods e.g leeks, onions, chicory
Naturopathic approach to insulin sensitivity
Optimise insulin sensitivity
- Time restricted eating
- Increase exercise
- Vit D, zinc, chromium
Fasting glucose should be this for the lowest mortality
4.4-5.2mmol/l
How to reduce obesity
Chew well - 30 times
Palm sized protein with every meal
Fasting 16:8
Smaller portions
Exercise daily: 35 mins low intensity
Always have breakfast
5HTP obesity function
Increase satiety
Promotes sleep (enhances melatonin production)
50-100mg twice daily
Green tea obesity function
Polyphenols may stimulate thermogenesis and far oxidation
600-900mg daily
(3-4 cups of green tea)
L- carnitine obesity function
Improves leptin resistance
Reduces BMI and fat mass
Up to 2000mg daily
Chromium obesity function
Increases insulin sensitivity
Reduces carb cravings
Increases lean body mass
200-1000mcg chromoum picolinate
Breaking habits
Identify the cue
Change the routine
Change the reward
Repetition is key
Eating disorder environmental risk factors
Bullying and abuse
Difficult family relationships
Media - body image
Sports e.g ballet, dancing
Eating disorder genetics
SNPs
Family history
Deficiencies e.g efa, zinc
Perfectionism