Which natural food contain highest calcuim?

Dairy products, including milk, cottage cheese, yogurt, etc. Also leafy greens like spinach.

Hello Mohsen Mir,
Highest calcium: that depends on how much you eat and what you eat it with for proper absorption along with side effects of medications and other factors which break down and build up bone.
A google search is quick and simple enough along with many books available in the library.
Yes, sesame seeds are also a good source of calcium along with the ones that come to mind such as Eric mentions, along with sardines and salmon with bones.
If you want the best bang for your buck, a registered dietitian is a great source. You might even find some seminars to attend in your neighborhood at a health and wellness center.
Take care,
Natalie aka NAPS 2 B Fit.

Top 10 Calcium Rich Foods

1) Raw Milk
1 cup: 300 mg (30% DV)

2) Kale (cooked)
1 cup: 245 mg (24% DV)

3) Sardines (with bones)
2 ounces: 217 mg (21% DV)

4) Yogurt or Kefir
6 oz: 300 mg (30% DV)

5) Broccoli
1 › cup cooked: 93 mg (9% DV)

6) Watercress
1 cup: 41 mg (4% DV)

7) Cheese
1 oz: 224 mg (22% DV)

8) Bok Choy
1 cup:74 mg (7% DV)

9) Okra
1 cup: 82 mg (8% DV)

10) Almonds
1 oz: 76 mg (8% DV)

A simple internet search would have been easier for this one. Why ask us? Seach High Calcium food sources. Or search foods with highest calcium absorption in the body.

We just talked about this topic in our Complete Health Improvement Program (CHIP) class on Bone Health. We talked about highest sources of calcium in plant foods. They are:

Soy milk 300mg (1 cup)
Soybeans 175mg (1 C cooked)
Collard greens 133mg (1/4 C chopped and boiled)
Tofu (set with calcium) 126mg (1/2 cup)
Kale 94mg (1 C chopped and boiled)
Sesame seeds 88mg (1T)
followed by:
almonds, oranges,rhubarb, baked beans, cabbage broccoli and dates.

We also talked about the importance of Vitamin D and K and resistance exercise for bone strength.