Diet and Nutrition
When we talk about “diet,” we’re talking about the quantity and quality of the foods we eat.
“Nutrition,” on the other hand, refers to more than just food and drink. It is the process that involves taking in and using fuel (food and drink) in the body.
Nutrition is a three part process:
- Food and drinks are consumed (eating and drinking)
- The body breaks down food and drink into nutrients (digestion)
- Nutrients travel through the blood stream to body tissues and organs to be used as energy, and for growth and repair (absorption)
For effective nutrition to occur, people:
- Must take in food and drink that provide enough energy and key nutrients for growth and repair
- Must have a digestive system that works properly
- Need healthy body systems to transport and absorb nutrients to be used by the body
Diet and Nutrition and Frailty: What do We Know?
Maintaining good nutrition can become a challenge as we age.
Malnutrition (undernutrition) occurs when there is a lack of nutrients in your diet. This could be due to a poor diet, not eating enough food or to problems absorbing nutrients from food. It is a factor that increases the risk of frailty.
Why is malnourishment common in seniors?
Did you know that:
- 34% of seniors have difficulties meeting their nutritional needs
- 70% of malnourished patients are living with frailty
A diet lacking in quantity or quality can contribute to being over- or under-weight, decreased bone mass, immune dysfunction, cognitive impairment, functional limitations, and a lowered ability to rebound from illness or surgery. It can also lead to chronic conditions, while existing conditions and their treatments may impair nutritional well-being.
As a result, malnutrition is a factor that increases the risk of frailty.
As we age, our bodies need more protein.
Protein helps to maintain muscle mass and keep us healthy. There are many high quality sources of protein.
Vegetarians, take note: for you, getting enough high quality protein takes extra work, education, and planning to ensure you’re getting the right amino acids. It often involves cooking your own food, which can be challenging for older adults at risk for frailty.
How much protein is enough?
Experts recommend 1 to 1.5 grams of protein per kg of body weight.
If someone weighs 175 pounds (80 kg) they should aim for: 80 to 120 grams of quality protein (i.e., a protein that contains all of the essential amino acids in the right amounts) each day.
Calcium and vitamin D are vital for bone and muscle health
Did you know that calcium is the most abundant mineral in the body? Over 99% of the body’s calcium supply is found in the bones and teeth, where it supports their structure. Calcium is also important for proper muscle function, strong bones, nerve transmission, and hormonal secretion.
Evidence has confirmed that vitamin D and calcium play a vital role in supporting the health of the skeletal system, keeping bones and muscles strong, and helping to prevent osteoporosis.
Calcium is best consumed as part of a healthy diet:
- Men 51 to 70 years need 1000mg daily
- Women 51 to 70 years need 1200mg daily
- All adults 70 years and older need 1200mg daily
- Milk, yogurt, cheese, and fortified plant-based beverages (e.g., soy drinks)
- Dark green vegetables (e.g., broccoli, kale, and spinach)
- Fish with soft bones that are eaten (e.g., canned salmon or sardines)
Vitamin D helps absorb calcium—they work together! Apart from helping your body absorb calcium, vitamin D also plays a role in your nervous, muscle, and immune systems.
Vitamin D is best consumed as a dietary supplement
Diet and sunlight provide some Vitamin D. However, more than 75% of Canadians report inadequate Vitamin D intake. Vitamin D deficiency (not getting enough vitamin D to stay healthy) is a common, serious medical condition that significantly affects the health and well-being of older adults, particularly bone health.
Supplementation is recommended:
- Adults 18 to 70 years need 600 IU daily
- Adults 70 years and older need 800 IU daily
Vitamin D cannot be absorbed fully by the body without the presence of calcium. It is best to take vitamin D & calcium supplements together.
- Oily fish (e.g., salmon and oysters)
- Fish oils (e.g., halibut and cod liver)
- Egg yolks
- Cow’s milk
- Cheese (if made with fortified milk)
- Yogurt (if made with fortified milk)
Note: Cheese and yogurt can be made with vitamin D-fortified milk, however, they do not contain as much vitamin D as milk alone does.
Did you know that vitamin D receptors have been found in all areas of the body?
Interest in researching vitamin D has increased in recent years. Research is now ongoing to determine if providing vitamin D can help prevent, treat, or improve the chronic conditions of aging, such as cognitive decline, depression, cardiovascular disease, hypertension, type 2 diabetes, and cancer.
Innovations Presented at CFN’s Annual Conference
Government of Canada
British Columbia Ministry of Health
Dieticians of Canada
Heart and Stroke Foundation of Canada
Canadian Nutrition Society
Canadian Malnutrition Task Force
A Table for One: Hidden Dangers of Eating Alone (and tips to help)
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Whiting, S.J., Langlois, K. A., Vatanparast, H., & Greene-Finestone, L. S. (2011). The vitamin D status of Canadians relative to the 2011 Dietary Reference Intakes: An examination in children and adults with and without supplement use. American Journal of Clinical Nutrition, 94(1), 128-135. doi: 10.3945/ajcn.111.013268
These are general health guidelines and should not be considered personal medical advice. Speak to your doctor before taking any new vitamins or supplements. You should consult your health care provider and discuss each element outlined above to ensure that each element of the AVOID Frailty campaign is personally customized for you.