What you need |
Function |
How it affects aging |
Where to get it |
When it's critical |
Calcium
RDA of 1,000 milligrams per
day, increasing to 1,500 milligrams per day in your 40s and 50s

|
Increases
bone density
|
Bone density peaks in women between the ages of 30 and 34. The more bone
mass, the smaller the risk of developing arthritis or suffering bone
fractures later.
|
Dairy products such as milk, yogurt and cheese, and some seafood (shrimp,
sardines and salmon)
|
In
your 20s and 30s to build bone mass, and in your 40s and 50s to maintain it
|
Vitamin
D
RDA of 200 international
units (IU) per day

|
Helps bones absorb calcium
|
Combined with calcium and exercise, it helps lower the risk of osteoporosis.
|
Fortified dairy products, fortified cereals, and fatty fish. A 3.5oz. piece
of salmon contains 360 IU of vitamin D.
|
Most important in your 20s and early 30s, when you're building bone mass
|
Vitamin
C
RDA of 75 milligrams per
day

|
Vital for strong blood vessels, bones and skin
|
Fights skin damage, lowers bad cholesterol, boosts immunity, keeps bones
strong as you age, may reduce risk of cancer, heart disease and stroke
|
Berries, broccoli, cantaloupe, citrus fruits, leafy greens, green peppers
and tomatoes
|
Throughout life, but pregnancy, oral contraceptives or estrogen therapy may
increase your need (ask your doctor).
|
Polyunsaturated fats
(not saturated fats)

|
Your body needs fat (and its calories) to function - but it must be the
right fat. Polyunsaturated fats may actually help keep cholesterol levels
low.
|
Replacing card calories with polyunsaturated fat calories lowers the risk of
heart disease. It also helps keep hair and skin healthy.
|
Olive, sunflower, safflower and soybean oils. Seafood is lower in saturated
fat than meat is.
|
Most important during your 40s and 50s, when the level of estrogen - which
protects the heart from disease - is starting to decline
|
Fiber
20 - 35 grams per day

|
Lowers cholesterol
|
Helps reduce the risk of heart disease and high blood pressure and aids
digestion
|
Fruits, grains and vegetables. Bran cereals are the highest source.
|
Particularly important in your 40s and 50s, when estrogen levels drop
|